485BPOS

As filed with the Securities and Exchange Commission on March 21, 2013

Securities Act of 1933 Registration No. 333-09341

Investment Company Act of 1940 Registration No. 811-07739

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM N-1A

REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933    [X]
	Pre-Effective Amendment No.                      [   ]
	Post-Effective Amendment No. 36               [X]
	and/or
REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940
	Amendment No. 38                                        [X]

(Check appropriate box or boxes)

Harding, Loevner Funds, Inc.

(Exact Name of Registrant as Specified in Charter)

400 Crossing Boulevard, Fourth Floor

Bridgewater, New Jersey 08807

(Address of Principal Executive Offices)

1-877-435-8105

(Registrant’s Telephone Number, including Area Code)

Name and Address of Agent for Service: Owen T. Meacham, Esq. The Northern Trust Company 50 South LaSalle Street, B-7 Chicago, Illinois 60603 Copies to: Stephen H. Bier, Esq. Dechert LLP 1095 Avenue of the Americas New York, New York 10036-6797

It Is Proposed That This Filing Become Effective (Check Appropriate Box):

[X] Immediately upon filing pursuant to paragraph (b)

[   ] On (date) pursuant to paragraph (b)

[   ] 60 days after filing pursuant to paragraph (a)(1)

[   ] On (date) pursuant to paragraph (a)(1)

[   ] 75 days after filing pursuant to paragraph (a)(2)

[   ] On (date) pursuant to paragraph (a)(2) of Rule 485

If appropriate, check the following box:

[   ] This post-effective amendment designates a new effective date for a previously filed post-effective amendment.

SIGNATURES

Pursuant to the requirements of the Securities Act of 1933, as amended (the “Securities Act”), and the Investment Company Act of 1940, as amended, the Registrant certifies that it meets all of the requirements for effectiveness of this Registration Statement under Rule 485(b) under the Securities Act and has duly caused this Post-Effective Amendment No. 36 to its Registration Statement to be signed on its behalf by the undersigned, duly authorized, in the City of Bridgewater, State of New Jersey, on the 21^st day of March, 2013.

HARDING, LOEVNER FUNDS, INC.
By:	/s/ Richard T. Reiter
	Richard T Reiter, President

Pursuant to the requirements of the Securities Act, this Post-Effective Amendment No. 36 to the Registrant’s Registration Statement has been signed below by the following persons in the capacities and on the date indicated.

Signature	Title	Date
*/s/ David R. Loevner	Director	March 21, 2013
David R. Loevner
*/s/ Jane A. Freeman	Director	March 21, 2013
Jane A. Freeman
*/s/ Jennifer M. Borggaard	Director	March 21, 2013
Jennifer M. Borggaard
*/s/ William E. Chapman, III	Director	March 21, 2013
William E. Chapman, III
*/s/ Samuel R. Karetsky	Director	March 21, 2013
Samuel R. Karetsky
*/s/ R. Kelly Doherty	Director	March 21, 2013
R. Kelly Doherty
*/s/ Charles Freeman	Director	March 21, 2013
Charles Freeman
*/s/ Eric Rakowski	Director	March 21, 2013
Eric Rakowski
/s/ Richard T. Reiter	President	March 21, 2013
Richard T. Reiter
/s/ Charles S. Todd	Chief Financial Officer and Treasurer	March 21, 2013
Charles S. Todd
/s/ Owen T. Meacham
Owen T. Meacham * Attorney-in-Fact Dated: March 21, 2013

* As Attorney-in-Fact pursuant to Powers of Attorney (previously filed in Post-Effective Amendment No. 31 to the Registrant’s Registration Statement on Form N-1A).

INDEX TO EXHIBITS

XBRL Instance Document	Ex-101.INS
XBRL Taxonomy Extension Schema Document	Ex-101.SCH
XBRL Taxonomy Extension Calculation Linkbase Document	Ex-101.CAL
XBRL Taxonomy Extension Definition Linkbase Document	Ex-101.DEF
XBRL Taxonomy Extension Labels Linkbase Document	Ex-101.LAB
XBRL Taxonomy Extension Presentation Linkbase Document	Ex-101.PRE

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	HARDING LOEVNER FUNDS INC
Prospectus Date	rr_ProspectusDate	Feb. 28, 2013
Investor | Harding Loevner Emerging Markets Portfolio
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	PORTFOLIO SUMMARY Emerging Markets Portfolio The Investor Class of the Emerging Markets Portfolio is not currently available.
Objective [Heading]	rr_ObjectiveHeading	Investment Objective
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	The Emerging Markets Portfolio (the “Portfolio”) seeks long-term capital appreciation through investments in equity securities of companies based in emerging markets.
Expense [Heading]	rr_ExpenseHeading	Portfolio Fees and Expenses
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	This table describes the fees and expenses that you may pay if you buy and hold shares of the Investor Class of the Portfolio. There is no sales charge imposed on purchases of shares.
Shareholder Fees Caption [Text]	rr_ShareholderFeesCaption	Shareholder Fees (fees paid directly from your investment)
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	Annual Portfolio Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Fee Waiver or Reimbursement over Assets, Date of Termination	rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination	February 28, 2014
Portfolio Turnover [Heading]	rr_PortfolioTurnoverHeading	Portfolio Turnover
Portfolio Turnover [Text Block]	rr_PortfolioTurnoverTextBlock	The Portfolio pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Portfolio shares are held in a taxable account. These costs, which are not reflected in annual portfolio operating expenses or in the Example, affect the Portfolio’s performance. During the most recent fiscal year, the Portfolio’s portfolio turnover rate was 42% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	42.00%
Other Expenses, New Fund, Based on Estimates [Text]	rr_OtherExpensesNewFundBasedOnEstimates	Other expenses have been estimated based on actual expenses of the Advisor Class during the fiscal year ended October 31, 2012.
Expenses Restated to Reflect Current [Text]	rr_ExpensesRestatedToReflectCurrent	Expense information in this table has been restated to reflect current fees.
Expense Example [Heading]	rr_ExpenseExampleHeading	■    Example:
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	This example is intended to help you compare the cost of investing in the Investor Class of the Portfolio with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Investor Class of the Portfolio for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Investor Class’s operating expenses remain the same except that the example assumes that the fee waiver and expense reimbursement agreement pertains only through February 28, 2014. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Strategy [Heading]	rr_StrategyHeading	Principal Investment Strategies
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	The Portfolio invests primarily in companies that are based in emerging and frontier markets. It may also invest in short-term or other debt securities. Emerging and frontier markets offer investment opportunities that arise from long-term trends in demographics, deregulation, offshore outsourcing and improving corporate governance in developing countries. Harding Loevner LP (“Harding Loevner”), the Portfolio’s investment adviser, undertakes fundamental research in an effort to identify companies that are well managed, financially sound, fast growing and strongly competitive, and whose shares are under-priced relative to their intrinsic value. To reduce its volatility, the Portfolio is diversified across dimensions of geography, industry and currency. The Portfolio normally holds 50-80 investments across at least 15 countries. Emerging and frontier markets include countries that have an emerging stock market as defined by Morgan Stanley Capital International, countries or markets with low- to middle-income economies as classified by the World Bank, and other countries or markets with similar characteristics. Emerging and frontier markets tend to have relatively low gross national product per capita compared to the world’s major economies and may have the potential for rapid economic growth. Factors bearing on whether a company is considered to be “based” in an emerging or frontier market may include: (1) it is legally domiciled in an emerging or frontier market; (2) it conducts at least 50% of its business, as measured by the location of its sales, earnings, assets, or production, in an emerging or frontier market; or (3) it has the principal exchange listing for its securities in an emerging or frontier market. The Portfolio will invest broadly in equity and debt securities of companies domiciled in one of at least 15 countries with emerging or frontier markets, generally considered to include all countries except Australia, Austria, Belgium, Canada, Denmark, Finland, France, Germany, Greece, Hong Kong, Ireland, Israel, Italy, Japan, the Netherlands, New Zealand, Norway, Portugal, Singapore, Spain, Sweden, Switzerland, the United Kingdom and the United States. At least 65% of the Portfolio’s total assets will be denominated in at least three currencies other than the U.S. Dollar. For purposes of compliance with this restriction, American Depositary Receipts, Global Depositary Receipts and European Depositary Receipts (collectively, “Depositary Receipts”) will be considered to be denominated in the currency of the country where the securities underlying the Depositary Receipts are traded. The Portfolio invests at least 65% of its total assets in common stocks, preferred stocks, rights and warrants issued by companies that are based in emerging or frontier markets, securities convertible into such securities (including Depositary Receipts), and investment companies that invest in the types of securities in which the Portfolio would normally invest. The Portfolio also may invest in securities of U.S. companies that derive, or are expected to derive, a significant portion of their revenues from their foreign operations, although under normal circumstances, not more than 15% of the Portfolio’s total assets will be invested in securities of U.S. companies. The Portfolio also may invest up to 35% of its total assets in debt securities of domestic and foreign issuers, including such instruments as corporate bonds, debentures, notes, commercial paper, short-term notes, medium-term notes and variable rate notes. The Portfolio invests at least 80% of its net assets (plus any borrowings for investment purposes) in emerging and frontier markets securities. This strategy is not fundamental, but should the Portfolio decide to change this strategy, it will provide shareholders with at least 60 days’ prior written notice. The Portfolio also may invest in derivatives, including forward foreign currency exchange contracts and equity derivative securities such as participation notes; options on common stocks; and options, futures and options on futures on foreign common stock indices. Because some emerging market countries do not permit foreigners to participate directly in their securities markets or otherwise present difficulties for efficient foreign investment, the Portfolio may use equity derivative securities, and, in particular, participation notes, to gain exposure to those countries.
Risk [Heading]	rr_RiskHeading	Principal Risks
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	The Portfolio is subject to numerous risks, any of which could cause an investor to lose money. The principal risks of the Portfolio are as follows: Market Risk:  Investments in the Portfolio may lose value due to a general downturn in stock markets. Currency Risk:  Foreign currencies may experience steady or sudden devaluation relative to the U.S. dollar, adversely affecting the value of the Portfolio’s investments. Because the Portfolio’s net asset value is determined on the basis of U.S. dollars, if the local currency of a foreign market depreciates against the U.S. dollar, you may lose money even if the foreign market prices of the Portfolio’s holdings rise. Foreign Investment Risk:  Securities issued by foreign entities involve risks not associated with U.S. investments. These risks include additional taxation, political, economic, social or diplomatic instability, and the above-mentioned possibility of changes in foreign currency exchange rates. There may also be less publicly-available information about a foreign issuer. Emerging and Frontier Market Risk:  Emerging and frontier market securities involve unique risks, such as exposure to economies less diverse and mature than that of the U.S. or more established foreign markets. Economic or political instability may cause larger price changes in emerging or frontier market securities than in securities of issuers based in more developed foreign countries. Debt Securities Risk:  Debt securities may lose value due to unfavorable fluctuations in the level of interest rates or due to a decline in the creditworthiness of the issuer. As interest rates rise, the value of debt securities declines. This risk is generally greater for debt securities with longer maturities than for debt securities with shorter maturities. Participation Notes Risk:  Participation notes are designed to replicate the return of a particular underlying equity or debt security, currency or market. Participation notes involve the same risks associated with a direct investment in the underlying security, currency, or market. In addition, participation notes involve counterparty risk, because the Portfolio has no rights against the issuer(s) of the underlying security(ies) and must rely on the creditworthiness of the issuer of the participation note.
Risk Lose Money [Text]	rr_RiskLoseMoney	The Portfolio is subject to numerous risks, any of which could cause an investor to lose money.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	Portfolio Performance
Performance Narrative [Text Block]	rr_PerformanceNarrativeTextBlock	The Investor Class of the Portfolio has not yet been in operation for a calendar year. Accordingly, the performance information shown below is for the Advisor Class of the Portfolio which is not offered in this Prospectus but would have substantially similar annual returns as the Investor Class because both classes of shares are invested in the same portfolio of securities. Annual returns will differ only to the extent that the classes do not have the same expenses. Specifically, the performance shown for the Advisor Class does not reflect the 0.25% distribution fee that is charged to Investor Class shares. Had these been reflected, the performance shown would have been lower. Updated Portfolio performance information is available at www.hardingloevnerfunds.com or by calling (877) 435-8105.
Performance One Year or Less [Text]	rr_PerformanceOneYearOrLess	The Investor Class of the Portfolio has not yet been in operation for a calendar year.
Performance Availability Phone [Text]	rr_PerformanceAvailabilityPhone	(877) 435-8105
Performance Availability Website Address [Text]	rr_PerformanceAvailabilityWebSiteAddress	www.hardingloevnerfunds.com
Bar Chart [Heading]	rr_BarChartHeading	Emerging Markets Portfolio
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	The best calendar quarter return during the period shown above was 32.85% in the 2nd quarter of 2009; the worst was -27.99% in the 4th quarter of 2008.
Bar Chart, Returns for Class Not Offered in Prospectus [Text]	rr_BarChartReturnsForClassNotOfferedInProspectus	Accordingly, the performance information shown below is for the Advisor Class of the Portfolio which is not offered in this Prospectus but would have substantially similar annual returns as the Investor Class because both classes of shares are invested in the same portfolio of securities.
Performance Table Heading	rr_PerformanceTableHeading	Average Annual Total Returns (for the periods ended December 31, 2012)
Performance Table Uses Highest Federal Rate	rr_PerformanceTableUsesHighestFederalRate	After-tax returns in the table above are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred	rr_PerformanceTableNotRelevantToTaxDeferred	Actual after-tax returns depend on an investor’s tax situation and may differ from those shown, and after-tax returns shown are not relevant to investors who hold their Portfolio shares through tax-deferred arrangements, such as 401(k) plans or Individual Retirement Accounts.
Performance Table Explanation after Tax Higher	rr_PerformanceTableExplanationAfterTaxHigher	In some cases, the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Portfolio shares at the end of the measurement period.
Investor | Harding Loevner Emerging Markets Portfolio | Investor Class
Risk/Return:	rr_RiskReturnAbstract
Redemption Fee (as a percentage of amount redeemed within 90 days or less from the date of purchase)	rr_RedemptionFeeOverRedemption	2.00%
Management Fees	rr_ManagementFeesOverAssets	1.14%	[1]
Distribution (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	0.25%	[1]
Other Expenses	rr_OtherExpensesOverAssets	0.33%	[1],[2]
Total Annual Portfolio Operating Expenses	rr_ExpensesOverAssets	1.72%	[1]
Fee Waiver and/or Expense Reimbursement	rr_FeeWaiverOrReimbursementOverAssets	none	[1],[3]
Total Annual Portfolio Operating Expenses After Fee Waiver and/or Expense Reimbursement	rr_NetExpensesOverAssets	1.72%	[1],[3]
1 Year	rr_ExpenseExampleYear01	175
3 Years	rr_ExpenseExampleYear03	542
5 Years	rr_ExpenseExampleYear05	933
10 Years	rr_ExpenseExampleYear10	2,030
Investor | Harding Loevner Emerging Markets Portfolio | Advisor Class
Risk/Return:	rr_RiskReturnAbstract
2003	rr_AnnualReturn2003	56.34%
2004	rr_AnnualReturn2004	28.85%
2005	rr_AnnualReturn2005	38.62%
2006	rr_AnnualReturn2006	28.73%
2007	rr_AnnualReturn2007	35.94%
2008	rr_AnnualReturn2008	(52.33%)
2009	rr_AnnualReturn2009	63.46%
2010	rr_AnnualReturn2010	20.98%
2011	rr_AnnualReturn2011	(17.51%)
2012	rr_AnnualReturn2012	22.73%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	best calendar quarter return
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Jun. 30, 2009
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	32.85%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	the worst
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Dec. 31, 2008
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(27.99%)
1-Year	rr_AverageAnnualReturnYear01	22.73%
5-Year	rr_AverageAnnualReturnYear05	(0.93%)
10-Year	rr_AverageAnnualReturnYear10	16.65%
Investor | Harding Loevner Emerging Markets Portfolio | Return After Taxes on Distributions | Advisor Class
Risk/Return:	rr_RiskReturnAbstract
1-Year	rr_AverageAnnualReturnYear01	21.49%	[4]
5-Year	rr_AverageAnnualReturnYear05	(1.21%)	[4]
10-Year	rr_AverageAnnualReturnYear10	16.40%	[4]
Investor | Harding Loevner Emerging Markets Portfolio | Return After Taxes on Distributions and Sale of Portfolio Shares | Advisor Class
Risk/Return:	rr_RiskReturnAbstract
1-Year	rr_AverageAnnualReturnYear01	16.43%	[4]
5-Year	rr_AverageAnnualReturnYear05	(0.77%)	[4]
10-Year	rr_AverageAnnualReturnYear10	15.24%	[4]
Investor | Harding Loevner Emerging Markets Portfolio | MSCI Emerging Markets (net) Index (reflects no deduction for fees, expenses, or taxes)
Risk/Return:	rr_RiskReturnAbstract
1-Year	rr_AverageAnnualReturnYear01	18.23%
5-Year	rr_AverageAnnualReturnYear05	(0.92%)
10-Year	rr_AverageAnnualReturnYear10	16.51%

[1] Expense information in this table has been restated to reflect current fees. Therefore, the expenses in this table will not correlate to the expenses shown in the Financial Highlights of the Portfolio.

[2] Other expenses have been estimated based on actual expenses of the Advisor Class during the fiscal year ended October 31, 2012.

[3] Harding Loevner LP has contractually agreed to waive a portion of its management fee and/or reimburse the Portfolio for its other operating expenses to the extent Total Annual Portfolio Operating Expenses, as a percentage of average daily net assets, exceed 1.75% through February 28, 2014.

[4] After-tax returns in the table above are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. In some cases, the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Portfolio shares at the end of the measurement period. Actual after-tax returns depend on an investor's tax situation and may differ from those shown, and after-tax returns shown are not relevant to investors who hold their Portfolio shares through tax-deferred arrangements, such as 401(k) plans or Individual Retirement Accounts.

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	HARDING LOEVNER FUNDS INC
Prospectus Date	rr_ProspectusDate	Feb. 28, 2013
Document Creation Date	dei_DocumentCreationDate	Feb. 28, 2013

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	HARDING LOEVNER FUNDS INC
Prospectus Date	rr_ProspectusDate	Feb. 28, 2013
Investor | Harding Loevner International Small Companies Portfolio
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	International Small Companies Portfolio
Objective [Heading]	rr_ObjectiveHeading	Investment Objective
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	The International Small Companies Portfolio (the “Portfolio”) seeks long-term capital appreciation through investments in equity securities of small companies based outside the United States.
Expense [Heading]	rr_ExpenseHeading	Portfolio Fees and Expenses
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	This table describes the fees and expenses that you may pay if you buy and hold shares of the Investor Class of the Portfolio. There is no sales charge imposed on purchases of shares.
Shareholder Fees Caption [Text]	rr_ShareholderFeesCaption	Shareholder Fees (fees paid directly from your investment)
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	Annual Portfolio Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Fee Waiver or Reimbursement over Assets, Date of Termination	rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination	February 28, 2014
Portfolio Turnover [Heading]	rr_PortfolioTurnoverHeading	Portfolio Turnover
Portfolio Turnover [Text Block]	rr_PortfolioTurnoverTextBlock	The Portfolio pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Portfolio shares are held in a taxable account. These costs, which are not reflected in annual portfolio operating expenses or in the Example, affect the Portfolio’s performance. During the most recent fiscal year, the Portfolio’s portfolio turnover rate was 10% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	10.00%
Expenses Restated to Reflect Current [Text]	rr_ExpensesRestatedToReflectCurrent	Expense information in this table has been restated to reflect current fees.
Expense Example [Heading]	rr_ExpenseExampleHeading	■    Example:
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	This example is intended to help you compare the cost of investing in the Investor Class of the Portfolio with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Investor Class of the Portfolio for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Investor Class’s operating expenses remain the same, except that the example assumes the fee waiver and expense reimbursement agreement pertains only through February 28, 2014. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Strategy [Heading]	rr_StrategyHeading	Principal Investment Strategies
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	The Portfolio invests in small companies based outside the U.S., including companies in emerging and frontier as well as in developed markets. Companies considered to be small are those with a market capitalization below US$3 billion. Harding Loevner LP (“Harding Loevner”), the Portfolio’s investment adviser, undertakes fundamental research in an effort to identify companies that are well managed, financially sound, fast growing and strongly competitive and whose shares are under-priced relative to their intrinsic value. To reduce its volatility, the Portfolio is diversified across dimensions of geography, industry and currency. The Portfolio normally holds 50-200 investments across at least 12 countries. Factors bearing on whether a company is considered to be “based” outside the United States may include: (1) it is legally domiciled outside the United States; (2) it conducts at least 50% of its business, as measured by the location of its sales, earnings, assets, or production, outside the United States; or (3) it has the principal exchange listing for its securities outside the United States. The Portfolio will normally invest broadly in companies domiciled in the following countries and regions: (1) Europe; (2) the Pacific Rim; (3) Canada and Mexico; and (4) countries with emerging or frontier markets. At least 65% of total assets will be denominated in at least three currencies other than the U.S. Dollar. For purposes of compliance with this restriction, American Depositary Receipts, Global Depositary Receipts, and European Depositary Receipts (collectively, “Depositary Receipts”) will be considered to be denominated in the currency of the country where the securities underlying the Depositary Receipts are traded. The Portfolio invests at least 80% of its net assets (plus any borrowings for investment purposes) in common stocks, preferred stocks, rights and warrants issued by small companies that are based outside the United States, securities convertible into such securities (including Depositary Receipts), and investment companies that invest in the types of securities in which the Portfolio would normally invest. This strategy is not fundamental, but should the Portfolio decide to change this strategy, it will provide shareholders with at least 60 days’ prior written notice. If the Portfolio continues to hold securities of small companies whose market capitalization, subsequent to purchase, grows to exceed US$3 billion, it may continue to treat them as small for the purposes of the 80% requirement. The Portfolio also may invest in securities of U.S. companies that derive, or are expected to derive, a significant portion of their revenues from their foreign operations, although under normal circumstances not more than 15% of the Portfolio’s total assets will be invested in securities of U.S. companies. The Portfolio may also invest in derivatives, including forward foreign currency exchange contracts and equity derivative securities such as participation notes; options on common stocks; and options, futures, and options on futures on foreign common stock indices. Because some emerging market countries do not permit foreigners to participate directly in their securities markets or otherwise present difficulties for efficient foreign investment, the Portfolio may use equity derivative securities, and, in particular, participation notes, to gain exposure to those countries.
Risk [Heading]	rr_RiskHeading	Principal Risks
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	The Portfolio is subject to numerous risks, any of which could cause an investor to lose money. The principal risks of the Portfolio are as follows: Market Risk:  Investments in the Portfolio may lose value due to a general downturn in stock markets. Currency Risk:  Foreign currencies may experience steady or sudden devaluation relative to the U.S. dollar, adversely affecting the value of the Portfolio’s investments. Because the Portfolio’s net asset value is determined on the basis of U.S. dollars, if the local currency of a foreign market depreciates against the U.S. dollar, you may lose money even if the foreign market prices of the Portfolio’s holdings rise. Foreign Investment Risk:  Securities issued by foreign entities involve risks not associated with U.S. investments. These risks include additional taxation, political, economic, social or diplomatic instability, and the above-mentioned possibility of changes in foreign currency exchange rates. There may also be less publicly-available information about a foreign issuer. Emerging and Frontier Market Risk:  Emerging and frontier market securities involve unique risks, such as exposure to economies less diverse and mature than that of the U.S. or more established foreign markets. Economic or political instability may cause larger price changes in emerging or frontier market securities than in securities of issuers based in more developed foreign countries. Small Company Risk:  The securities of smaller companies have historically exhibited more volatility with a lower degree of liquidity than large companies. Participation Notes Risk:  Participation notes are designed to replicate the return of a particular underlying equity or debt security, currency or market. Participation notes involve the same risks associated with a direct investment in the underlying security, currency, or market. In addition, participation notes involve counterparty risk, because the Portfolio has no rights against the issuer(s) of the underlying security(ies) and must rely on the creditworthiness of the issuer of the participation note.
Risk Lose Money [Text]	rr_RiskLoseMoney	The Portfolio is subject to numerous risks, any of which could cause an investor to lose money.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	Portfolio Performance
Performance Narrative [Text Block]	rr_PerformanceNarrativeTextBlock	The bar chart below shows how the Portfolio’s investment results have varied from year to year. The table that follows shows how the Portfolio’s Investor Class average annual total returns compare with a broad measure of market performance. Together, these provide an indication of the risks of investing in the Portfolio. How the Investor Class of the Portfolio has performed in the past (before and after taxes) is not necessarily an indication of how it will perform in the future. Updated Portfolio performance information is available at www.hardingloevnerfunds.com or by calling (877) 435-8105.
Performance Information Illustrates Variability of Returns [Text]	rr_PerformanceInformationIllustratesVariabilityOfReturns	The bar chart below shows how the Portfolio’s investment results have varied from year to year. The table that follows shows how the Portfolio’s Investor Class average annual total returns compare with a broad measure of market performance.
Performance Availability Phone [Text]	rr_PerformanceAvailabilityPhone	(877) 435-8105
Performance Availability Website Address [Text]	rr_PerformanceAvailabilityWebSiteAddress	www.hardingloevnerfunds.com
Performance Past Does Not Indicate Future [Text]	rr_PerformancePastDoesNotIndicateFuture	How the Investor Class of the Portfolio has performed in the past (before and after taxes) is not necessarily an indication of how it will perform in the future.
Bar Chart [Heading]	rr_BarChartHeading	International Small Companies Portfolio
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	The best calendar quarter return during the period shown above was 42.23% in the 2nd quarter of 2009; the worst was -24.79% in the 4th quarter of 2008.
Performance Table Heading	rr_PerformanceTableHeading	Average Annual Total Returns (for the periods ended December 31, 2012)
Performance Table Uses Highest Federal Rate	rr_PerformanceTableUsesHighestFederalRate	After-tax returns in the table above are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred	rr_PerformanceTableNotRelevantToTaxDeferred	Actual after-tax returns depend on an investor’s tax situation and may differ from those shown, and after-tax returns shown are not relevant to investors who hold their Portfolio shares through tax-deferred arrangements, such as 401(k) plans or Individual Retirement Accounts.
Performance Table Explanation after Tax Higher	rr_PerformanceTableExplanationAfterTaxHigher	In some cases, the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Portfolio shares at the end of the measurement period.
Investor | Harding Loevner International Small Companies Portfolio | Investor Class
Risk/Return:	rr_RiskReturnAbstract
Redemption Fee (as a percentage of amount redeemed within 90 days or less from the date of purchase)	rr_RedemptionFeeOverRedemption	2.00%
Management Fees	rr_ManagementFeesOverAssets	1.25%	[1]
Distribution (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	0.25%	[1]
Other Expenses	rr_OtherExpensesOverAssets	0.52%	[1]
Total Annual Portfolio Operating Expenses	rr_ExpensesOverAssets	2.02%	[1]
Fee Waiver and/or Expense Reimbursement	rr_FeeWaiverOrReimbursementOverAssets	(0.47%)	[1],[2]
Total Annual Portfolio Operating Expenses After Fee Waiver and/or Expense Reimbursement	rr_NetExpensesOverAssets	1.55%	[1],[2]
1 Year	rr_ExpenseExampleYear01	158
3 Years	rr_ExpenseExampleYear03	588
5 Years	rr_ExpenseExampleYear05	1,045
10 Years	rr_ExpenseExampleYear10	2,310
2008	rr_AnnualReturn2008	(48.17%)
2009	rr_AnnualReturn2009	72.27%
2010	rr_AnnualReturn2010	23.46%
2011	rr_AnnualReturn2011	(13.67%)
2012	rr_AnnualReturn2012	23.88%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	best calendar quarter return
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Jun. 30, 2009
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	42.23%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	the worst
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Dec. 31, 2008
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(24.79%)
1-Year	rr_AverageAnnualReturnYear01	23.88%
5-Year	rr_AverageAnnualReturnYear05	3.35%
Since Inception	rr_AverageAnnualReturnSinceInception	3.97%
Inception Date	rr_AverageAnnualReturnInceptionDate	Mar. 26, 2007
Investor | Harding Loevner International Small Companies Portfolio | Return After Taxes on Distributions | Investor Class
Risk/Return:	rr_RiskReturnAbstract
1-Year	rr_AverageAnnualReturnYear01	23.71%	[3]
5-Year	rr_AverageAnnualReturnYear05	3.33%	[3]
Since Inception	rr_AverageAnnualReturnSinceInception	3.92%	[3]
Inception Date	rr_AverageAnnualReturnInceptionDate	Mar. 26, 2007	[3]
Investor | Harding Loevner International Small Companies Portfolio | Return After Taxes on Distributions and Sale of Portfolio Shares | Investor Class
Risk/Return:	rr_RiskReturnAbstract
1-Year	rr_AverageAnnualReturnYear01	15.76%	[3]
5-Year	rr_AverageAnnualReturnYear05	2.93%	[3]
Since Inception	rr_AverageAnnualReturnSinceInception	3.47%	[3]
Inception Date	rr_AverageAnnualReturnInceptionDate	Mar. 26, 2007	[3]
Investor | Harding Loevner International Small Companies Portfolio | MSCI All Country World ex-U.S. Small Cap (net) Index (reflects no reduction for fees, expenses, or taxes)
Risk/Return:	rr_RiskReturnAbstract
1-Year	rr_AverageAnnualReturnYear01	18.50%
5-Year	rr_AverageAnnualReturnYear05	(0.40%)
Since Inception	rr_AverageAnnualReturnSinceInception	0.33%
Inception Date	rr_AverageAnnualReturnInceptionDate	Mar. 26, 2007

[1] Expense information in this table has been restated to reflect current fees. Therefore, the expenses in this table will not correlate to the expenses shown in the Financial Highlights of the Portfolio.

[2] Harding Loevner LP has contractually agreed to waive a portion of its management fees and/or reimburse the Portfolio for its other operating expenses to the extent Total Annual Portfolio Operating Expenses, as a percentage of average daily net assets, exceed 1.55% through February 28, 2014.

[3] After-tax returns in the table above are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. In some cases, the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Portfolio shares at the end of the measurement period. Actual after-tax returns depend on an investor's tax situation and may differ from those shown, and after-tax returns shown are not relevant to investors who hold their Portfolio shares through tax-deferred arrangements, such as 401(k) plans or Individual Retirement Accounts.

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	HARDING LOEVNER FUNDS INC
Prospectus Date	rr_ProspectusDate	Feb. 28, 2013
Investor | Harding Loevner Frontier Emerging Markets Portfolio
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	Frontier Emerging Markets Portfolio
Objective [Heading]	rr_ObjectiveHeading	Investment Objective
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	The Frontier Emerging Markets Portfolio (the “Portfolio”) seeks long-term capital appreciation through investments in equity securities of companies based in frontier and smaller emerging markets.
Expense [Heading]	rr_ExpenseHeading	Portfolio Fees and Expenses
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	This table describes the fees and expenses that you may pay if you buy and hold shares of the Investor Class of the Portfolio. There is no sales charge imposed on purchases of shares.
Shareholder Fees Caption [Text]	rr_ShareholderFeesCaption	Shareholder Fees (fees paid directly from your investment)
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	Annual Portfolio Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Fee Waiver or Reimbursement over Assets, Date of Termination	rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination	February 28, 2014
Portfolio Turnover [Heading]	rr_PortfolioTurnoverHeading	Portfolio Turnover
Portfolio Turnover [Text Block]	rr_PortfolioTurnoverTextBlock	The Portfolio pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Portfolio shares are held in a taxable account. These costs, which are not reflected in annual portfolio operating expenses or in the Example, affect the Portfolio’s performance. During the most recent fiscal year, the Portfolio’s portfolio turnover rate was 72% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	72.00%
Expense Example [Heading]	rr_ExpenseExampleHeading	■    Example:
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	This example is intended to help you compare the cost of investing in the Investor Class of the Portfolio with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Investor Class of the Portfolio for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% rate of return each year and that the Investor Class’s operating expenses remain the same, except that the example assumes that the fee waiver and expense reimbursement agreement pertains only through February 28, 2014. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Strategy [Heading]	rr_StrategyHeading	Principal Investment Strategies
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	The Portfolio invests primarily in companies that are based in frontier emerging markets, including the smaller traditionally-recognized emerging markets. Frontier emerging markets, with the exception of the oil-producing Gulf States and certain of the smaller traditionally-recognized emerging markets, tend to have relatively low gross national product per capita compared to the larger traditionally-recognized emerging markets and the world’s major developed economies. The frontier emerging markets include the least developed markets even by emerging markets standards. Frontier emerging markets offer investment opportunities that arise from long-term trends in demographics, deregulation, offshore outsourcing and improving corporate governance in developing countries. Harding Loevner LP (“Harding Loevner”), the Portfolio’s investment adviser, undertakes fundamental research in an effort to identify companies that are well managed, financially sound, fast growing and strongly competitive, and whose shares are under-priced relative to their intrinsic value. To reduce its volatility, the Portfolio is diversified across dimensions of geography, industry and currency. The Portfolio normally holds 50-200 investments across at least 12 countries. As used herein, frontier emerging markets include countries that are represented in the MSCI Frontier Markets Index or the S&P Frontier Markets BMI, or similar market indices, and the smaller of the traditionally-recognized emerging markets, such as those individually constituting less than 5% of the MSCI Emerging Markets Index or the S&P Emerging Markets BMI. Factors bearing on whether a company is considered to be “based” in a frontier emerging market may include: (1) it is legally domiciled in a frontier emerging market; (2) it conducts at least 50% of its business, as measured by the location of its sales, earnings, assets, or production, in frontier emerging markets; or (3) it has the principal exchange listing for its securities in a frontier emerging market. Frontier emerging markets generally include all countries except the developed markets of Australia, Austria, Belgium, Canada, Denmark, Finland, France, Germany, Greece, Hong Kong, Ireland, Israel, Italy, Japan, the Netherlands, New Zealand, Norway, Portugal, Singapore, Spain, Sweden, Switzerland, the United Kingdom and the United States and the larger traditionally-recognized emerging markets of Taiwan, Korea, Mexico, South Africa, Brazil, India, China and Russia. At least 65% of the Portfolio’s Net Assets will be denominated in at least three currencies other than the U.S. Dollar. For purposes of compliance with this restriction, American Depositary Receipts, Global Depositary Receipts and European Depositary Receipts (collectively, “Depositary Receipts”) will be considered to be denominated in the currency of the country where the securities underlying the Depositary Receipts are traded. The Portfolio invests at least 65% of its total assets in common stocks, preferred stocks, rights and warrants issued by companies that are based in the frontier emerging markets, securities convertible into such securities (including Depositary Receipts), and investment companies that invest in the types of securities in which the Portfolio would normally invest. The Portfolio also may invest in securities of U.S. companies that derive, or are expected to derive, a significant portion of their revenues from their foreign operations, although under normal circumstances, not more than 15% of the Portfolio’s total assets will be invested in securities of U.S. companies. The Portfolio may invest in short-term or other debt securities. The Portfolio may invest up to 35% of its total assets in debt securities of domestic and foreign issuers, including such instruments as corporate bonds, debentures, notes, commercial paper, short-term notes, and medium-term notes and variable rate notes. The Portfolio invests at least 80% of its net assets (plus any borrowings for investment purposes) in frontier emerging market securities. This strategy is not fundamental, but should the Portfolio decide to change this strategy, it will provide shareholders with at least 60 days’ prior written notice. The Portfolio may also invest in derivatives, including forward foreign currency exchange contracts and equity derivative securities such as participation notes; options on common stocks; and options, futures and options on futures on foreign common stock indices. Because some emerging market countries do not permit foreigners to participate directly in their securities markets or otherwise present difficulties for efficient foreign investment, the Portfolio may use equity derivative securities, and, in particular, participation notes, to gain exposure to those countries.
Risk [Heading]	rr_RiskHeading	Principal Risks
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	The Portfolio is subject to numerous risks, any of which could cause an investor to lose money. The principal risks of the Portfolio are as follows: Market Risk:  Investments in the Portfolio may lose value due to a general downturn in stock markets. Currency Risk:  Foreign currencies may experience steady or sudden devaluation relative to the U.S. dollar, adversely affecting the value of the Portfolio’s investments. Because the Portfolio’s net asset value is determined on the basis of U.S. dollars, if the local currency of a foreign market depreciates against the U.S. dollar, you may lose money even if the foreign market prices of the Portfolio’s holdings rise. Foreign Investment Risk:  Securities issued by foreign entities involve risks not associated with U.S. investments. These risks include additional taxation, political, economic, social or diplomatic instability, and the above-mentioned possibility of changes in the foreign currency exchange rates. There may also be less publicly-available information about a foreign issuer. Such risks may be magnified with respect to securities of issuers in frontier emerging markets. Frontier Emerging Market Risk:  Frontier emerging market securities involve unique risks, such as exposure to economies less diverse and mature than that of the U.S. or more established foreign markets. Economic or political instability may cause larger price changes in frontier emerging market securities than in securities of issuers based in more developed foreign countries, including securities of issuers based in larger emerging markets. Frontier emerging markets generally receive less investor attention than developed markets and larger emerging markets. Debt Securities Risk:  Debt securities may lose value due to unfavorable fluctuations in the level of interest rates or due to a decline in the creditworthiness of the issuer. As interest rates rise, the value of debt securities declines. This risk is generally greater for debt securities with longer maturities than for debt securities with shorter maturities. Participation Notes Risk:  Participation notes are designed to replicate the return of a particular underlying equity or debt security, currency or market. Participation notes involve the same risks associated with a direct investment in the underlying security, currency or market. In addition, participation notes involve counterparty risk, because the Portfolio has no rights under participation notes against the issuer(s) of the underlying security(ies) and must rely on the creditworthiness of the issuer of the participation note. Concentration Risk:  The Portfolio may invest up to 35% of its total assets in securities of companies in any one industry if, at the time of investment, that industry represents 20% or more of the Portfolio’s benchmark index, currently the MSCI Frontier Emerging Markets Index. Accordingly, at any time the Portfolio has such a concentration of investments in a single industry group, it will be particularly vulnerable to factors that adversely affect that industry group.
Risk Lose Money [Text]	rr_RiskLoseMoney	The Portfolio is subject to numerous risks, any of which could cause an investor to lose money.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	Portfolio Performance
Performance Narrative [Text Block]	rr_PerformanceNarrativeTextBlock	The bar chart below shows how the Portfolio’s investment results have varied from year to year. The table that follows shows how the Portfolio’s Investor Class average annual total returns compare with a broad measure of market performance. Together, these provide an indication of the risks of investing in the Portfolio. How the Investor Class of the Portfolio has performed in the past (before and after taxes) is not necessarily an indication of how it will perform in the future. Updated Portfolio performance information is available at www.hardingloevnerfunds.com or by calling (877) 435-8105.
Performance Information Illustrates Variability of Returns [Text]	rr_PerformanceInformationIllustratesVariabilityOfReturns	The bar chart below shows how the Portfolio’s investment results have varied from year to year. The table that follows shows how the Portfolio’s Investor Class average annual total returns compare with a broad measure of market performance.
Performance Availability Phone [Text]	rr_PerformanceAvailabilityPhone	(877) 435-8105
Performance Availability Website Address [Text]	rr_PerformanceAvailabilityWebSiteAddress	www.hardingloevnerfunds.com
Performance Past Does Not Indicate Future [Text]	rr_PerformancePastDoesNotIndicateFuture	How the Investor Class of the Portfolio has performed in the past (before and after taxes) is not necessarily an indication of how it will perform in the future.
Bar Chart [Heading]	rr_BarChartHeading	Frontier Emerging Markets Portfolio
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	The best calendar quarter return during the period shown above was 10.42% in the 1st quarter of 2012; the worst was -15.70% in the 3rd quarter of 2011.
Performance Table Heading	rr_PerformanceTableHeading	Average Annual Total Returns (for the periods ended December 31, 2012)
Performance Table Uses Highest Federal Rate	rr_PerformanceTableUsesHighestFederalRate	After-tax returns in the table above are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred	rr_PerformanceTableNotRelevantToTaxDeferred	Actual after-tax returns depend on an investor’s tax situation and may differ from those shown, and after-tax returns shown are not relevant to investors who hold their Portfolio shares through tax-deferred arrangements, such as 401(k) plans or Individual Retirement Accounts.
Performance Table Explanation after Tax Higher	rr_PerformanceTableExplanationAfterTaxHigher	In some cases, the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Portfolio shares at the end of the measurement period.
Investor | Harding Loevner Frontier Emerging Markets Portfolio | Investor Class
Risk/Return:	rr_RiskReturnAbstract
Redemption Fee (as a percentage of amount redeemed within 90 days or less from the date of purchase)	rr_RedemptionFeeOverRedemption	2.00%
Management Fees	rr_ManagementFeesOverAssets	1.50%
Distribution (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	0.25%
Other Expenses	rr_OtherExpensesOverAssets	2.96%
Total Annual Portfolio Operating Expenses	rr_ExpensesOverAssets	4.71%
Fee Waiver and/or Expense Reimbursement	rr_FeeWaiverOrReimbursementOverAssets	(2.46%)	[1]
Total Annual Portfolio Operating Expenses After Fee Waiver and/or Expense Reimbursement	rr_NetExpensesOverAssets	2.25%	[1]
1 Year	rr_ExpenseExampleYear01	228
3 Years	rr_ExpenseExampleYear03	1,199
5 Years	rr_ExpenseExampleYear05	2,175
10 Years	rr_ExpenseExampleYear10	4,641
2011	rr_AnnualReturn2011	(21.39%)
2012	rr_AnnualReturn2012	19.75%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	best calendar quarter return
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Mar. 31, 2012
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	10.42%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	the worst
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Sep. 30, 2011
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(15.70%)
1-Year	rr_AverageAnnualReturnYear01	19.75%
Since Inception	rr_AverageAnnualReturnSinceInception	(2.98%)
Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 31, 2010
Investor | Harding Loevner Frontier Emerging Markets Portfolio | Return After Taxes on Distributions | Investor Class
Risk/Return:	rr_RiskReturnAbstract
1-Year	rr_AverageAnnualReturnYear01	19.58%	[2]
Since Inception	rr_AverageAnnualReturnSinceInception	(3.08%)	[2]
Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 31, 2010	[2]
Investor | Harding Loevner Frontier Emerging Markets Portfolio | Return After Taxes on Distributions and Sale of Portfolio Shares | Investor Class
Risk/Return:	rr_RiskReturnAbstract
1-Year	rr_AverageAnnualReturnYear01	13.08%	[2]
Since Inception	rr_AverageAnnualReturnSinceInception	(2.53%)	[2]
Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 31, 2010	[2]
Investor | Harding Loevner Frontier Emerging Markets Portfolio | MSCI Frontier Emerging Markets (net) Index (reflects no deduction for fees, expenses, or taxes)
Risk/Return:	rr_RiskReturnAbstract
1-Year	rr_AverageAnnualReturnYear01	20.87%
Since Inception	rr_AverageAnnualReturnSinceInception	(0.17%)
Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 31, 2010

[1] Harding Loevner LP has contractually agreed to waive a portion of its management fee and/or reimburse the Portfolio for its other operating expenses to the extent Total Annual Portfolio Operating Expenses, as a percentage of average daily net assets, exceed 2.25% through February 28, 2014.

[2] After-tax returns in the table above are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. In some cases, the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Portfolio shares at the end of the measurement period. Actual after-tax returns depend on an investor's tax situation and may differ from those shown, and after-tax returns shown are not relevant to investors who hold their Portfolio shares through tax-deferred arrangements, such as 401(k) plans or Individual Retirement Accounts.

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	HARDING LOEVNER FUNDS INC
Prospectus Date	rr_ProspectusDate	Feb. 28, 2013
Investor | Harding Loevner International Equity Portfolio
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	International Equity Portfolio
Objective [Heading]	rr_ObjectiveHeading	Investment Objective
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	The International Equity Portfolio (the “Portfolio”) seeks long-term capital appreciation through investments in equity securities of companies based outside the United States.
Expense [Heading]	rr_ExpenseHeading	Portfolio Fees and Expenses
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	This table describes the fees and expenses that you may pay if you buy and hold shares of the Investor Class of the Portfolio. There is no sales charge imposed on purchases of shares.
Shareholder Fees Caption [Text]	rr_ShareholderFeesCaption	Shareholder Fees (fees paid directly from your investment)
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	Annual Portfolio Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Fee Waiver or Reimbursement over Assets, Date of Termination	rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination	February 28, 2014
Portfolio Turnover [Heading]	rr_PortfolioTurnoverHeading	Portfolio Turnover
Portfolio Turnover [Text Block]	rr_PortfolioTurnoverTextBlock	The Portfolio pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Portfolio shares are held in a taxable account. These costs, which are not reflected in annual portfolio operating expenses or in the Example, affect the Portfolio’s performance. During the most recent fiscal year, the Portfolio’s portfolio turnover rate was 14% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	14.00%
Expense Example [Heading]	rr_ExpenseExampleHeading	■    Example:
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	This example is intended to help you compare the cost of investing in the Investor Class of the Portfolio with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Investor Class of the Portfolio for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Investor Class’s operating expenses remain the same, except that the example assumes that the fee waiver and expense reimbursement agreement pertains only through February 28, 2014. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Strategy [Heading]	rr_StrategyHeading	Principal Investment Strategies
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	The Portfolio invests in companies based in developed markets outside the U.S. as well as in established companies in emerging and frontier markets. Harding Loevner LP (“Harding Loevner”), the Portfolio’s investment adviser, undertakes fundamental research in an effort to identify companies that are well managed, financially sound, fast growing and strongly competitive and whose shares are under-priced relative to their intrinsic value. To reduce its volatility, the Portfolio is diversified across dimensions of geography, industry, currency and market capitalization. The Portfolio normally holds 35-75 investments across at least 15 countries. Factors bearing on whether a company is considered to be “based” outside the United States may include: (1) it is legally domiciled outside the United States; (2) it conducts at least 50% of its business, as measured by the location of its sales, earnings, assets, or production, outside the United States; or (3) it has the principal exchange listing for its securities outside the United States. The Portfolio will normally invest broadly in equity securities of companies domiciled in the following countries and regions: (1) Europe; (2) the Pacific Rim; (3) Canada and Mexico; and (4) countries with emerging or frontier markets. At least 65% of total assets will be denominated in at least three currencies other than the U.S. Dollar. For purposes of compliance with this restriction, American Depositary Receipts, Global Depositary Receipts, and European Depositary Receipts (collectively, “Depositary Receipts”), will be considered to be denominated in the currency of the country where the securities underlying the Depositary Receipts are traded. The Portfolio invests at least 80% of its net assets (plus any borrowings for investment purposes) in common stocks, preferred stocks, rights and warrants issued by companies that are based outside the United States, securities convertible into such securities (including Depositary Receipts), and investment companies that invest in the types of securities in which the Portfolio would normally invest. This strategy is not fundamental, but should the Portfolio decide to change this strategy, it will provide shareholders with at least 60 days’ prior written notice. The Portfolio also may invest in securities of U.S. companies that derive, or are expected to derive, a significant portion of their revenues from their foreign operations, although under normal circumstances not more than 15% of the Portfolio’s total assets will be invested in securities of U.S. companies. The Portfolio may also invest in derivatives, including forward foreign currency exchange contracts and equity derivative securities such as participation notes; options on common stocks; and options, futures, and options on futures on foreign common stock indices. Because some emerging market countries do not permit foreigners to participate directly in their securities markets or otherwise present difficulties for efficient foreign investment, the Portfolio may use equity derivative securities, and, in particular, participation notes, to gain exposure to those countries.
Risk [Heading]	rr_RiskHeading	Principal Risks
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	The Portfolio is subject to numerous risks, any of which could cause an investor to lose money. The principal risks of the Portfolio are as follows: Market Risk:  Investments in the Portfolio may lose value due to a general downturn in stock markets. Currency Risk:  Foreign currencies may experience steady or sudden devaluation relative to the U.S. dollar, adversely affecting the value of the Portfolio’s investments. Because the Portfolio’s net asset value is determined on the basis of U.S. dollars, if the local currency of a foreign market depreciates against the U.S. dollar, you may lose money even if the foreign market prices of the Portfolio’s holdings rise. Foreign Investment Risk:  Securities issued by foreign entities involve risks not associated with U.S. investments. These risks include additional taxation, political, economic, social or diplomatic instability, and the above-mentioned possibility of changes in foreign currency exchange rates. There may also be less publicly-available information about a foreign issuer. Emerging and Frontier Market Risk:  Emerging and frontier market securities involve unique risks, such as exposure to economies less diverse and mature than that of the U.S. or more established foreign markets. Economic or political instability may cause larger price changes in emerging or frontier market securities than in securities of issuers based in more developed foreign countries. Participation Notes Risk:  Participation notes are designed to replicate the return of a particular underlying equity or debt security, currency or market. Participation notes involve the same risks associated with a direct investment in the underlying security, currency or market. In addition, participation notes involve counterparty risk, because the Portfolio has no rights against the issuer(s) of the underlying security(ies) and must rely on the creditworthiness of the issuer of the participation note.
Risk Lose Money [Text]	rr_RiskLoseMoney	The Portfolio is subject to numerous risks, any of which could cause an investor to lose money.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	Portfolio Performance
Performance Narrative [Text Block]	rr_PerformanceNarrativeTextBlock	The bar chart below shows how the Portfolio’s investment results have varied from year to year. The table that follows shows how the Portfolio’s Investor Class average annual total returns compare with a broad measure of market performance. Together, these provide an indication of the risks of investing in the Portfolio. How the Investor Class of the Portfolio has performed in the past (before and after taxes) is not necessarily an indication of how it will perform in the future. Updated Portfolio performance information is available at www.hardingloevnerfunds.com or by calling (877) 435-8105.
Performance Information Illustrates Variability of Returns [Text]	rr_PerformanceInformationIllustratesVariabilityOfReturns	The bar chart below shows how the Portfolio’s investment results have varied from year to year. The table that follows shows how the Portfolio’s Investor Class average annual total returns compare with a broad measure of market performance.
Performance Availability Phone [Text]	rr_PerformanceAvailabilityPhone	(877) 435-8105
Performance Availability Website Address [Text]	rr_PerformanceAvailabilityWebSiteAddress	www.hardingloevnerfunds.com
Performance Past Does Not Indicate Future [Text]	rr_PerformancePastDoesNotIndicateFuture	How the Investor Class of the Portfolio has performed in the past (before and after taxes) is not necessarily an indication of how it will perform in the future.
Bar Chart [Heading]	rr_BarChartHeading	International Equity Portfolio
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	The best calendar quarter return during the period shown above was 21.31% in the 2nd quarter of 2009; the worst was -22.21% in the 4th quarter of 2008.
Performance Table Heading	rr_PerformanceTableHeading	Average Annual Total Returns (for the periods ended December 31, 2012)
Performance Table Uses Highest Federal Rate	rr_PerformanceTableUsesHighestFederalRate	After-tax returns in the table above are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred	rr_PerformanceTableNotRelevantToTaxDeferred	Actual after-tax returns depend on an investor’s tax situation and may differ from those shown, and after-tax returns shown are not relevant to investors who hold their Portfolio shares through tax-deferred arrangements, such as 401(k) plans or Individual Retirement Accounts.
Performance Table Explanation after Tax Higher	rr_PerformanceTableExplanationAfterTaxHigher	In some cases, the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Portfolio shares at the end of the measurement period.
Investor | Harding Loevner International Equity Portfolio | Investor Class
Risk/Return:	rr_RiskReturnAbstract
Redemption Fee (as a percentage of amount redeemed within 90 days or less from the date of purchase)	rr_RedemptionFeeOverRedemption	2.00%
Management Fees	rr_ManagementFeesOverAssets	0.74%
Distribution (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	0.25%
Other Expenses	rr_OtherExpensesOverAssets	0.25%
Total Annual Portfolio Operating Expenses	rr_ExpensesOverAssets	1.24%
Fee Waiver and/or Expense Reimbursement	rr_FeeWaiverOrReimbursementOverAssets	none	[1]
Total Annual Portfolio Operating Expenses After Fee Waiver and/or Expense Reimbursement	rr_NetExpensesOverAssets	1.24%	[1]
1 Year	rr_ExpenseExampleYear01	126
3 Years	rr_ExpenseExampleYear03	393
5 Years	rr_ExpenseExampleYear05	681
10 Years	rr_ExpenseExampleYear10	1,500
2006	rr_AnnualReturn2006	22.67%
2007	rr_AnnualReturn2007	12.73%
2008	rr_AnnualReturn2008	(39.40%)
2009	rr_AnnualReturn2009	40.14%
2010	rr_AnnualReturn2010	17.33%
2011	rr_AnnualReturn2011	(10.09%)
2012	rr_AnnualReturn2012	19.73%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	best calendar quarter return
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Jun. 30, 2009
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	21.31%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	the worst
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Dec. 31, 2008
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(22.21%)
1-Year	rr_AverageAnnualReturnYear01	19.73%
5-Year	rr_AverageAnnualReturnYear05	1.41%
Since Inception	rr_AverageAnnualReturnSinceInception	6.18%
Inception Date	rr_AverageAnnualReturnInceptionDate	Sep. 30, 2005
Investor | Harding Loevner International Equity Portfolio | Return After Taxes on Distributions | Investor Class
Risk/Return:	rr_RiskReturnAbstract
1-Year	rr_AverageAnnualReturnYear01	19.63%	[2]
5-Year	rr_AverageAnnualReturnYear05	0.79%	[2]
Since Inception	rr_AverageAnnualReturnSinceInception	5.39%	[2]
Inception Date	rr_AverageAnnualReturnInceptionDate	Sep. 30, 2005	[2]
Investor | Harding Loevner International Equity Portfolio | Return After Taxes on Distributions and Sale of Portfolio Shares | Investor Class
Risk/Return:	rr_RiskReturnAbstract
1-Year	rr_AverageAnnualReturnYear01	12.95%	[2]
5-Year	rr_AverageAnnualReturnYear05	1.03%	[2]
Since Inception	rr_AverageAnnualReturnSinceInception	5.23%	[2]
Inception Date	rr_AverageAnnualReturnInceptionDate	Sep. 30, 2005	[2]
Investor | Harding Loevner International Equity Portfolio | MSCI All Country World ex-U.S. (net) Index (reflects no deduction for fees, expenses, or taxes)
Risk/Return:	rr_RiskReturnAbstract
1-Year	rr_AverageAnnualReturnYear01	16.84%
5-Year	rr_AverageAnnualReturnYear05	(2.89%)
Since Inception	rr_AverageAnnualReturnSinceInception	4.07%
Inception Date	rr_AverageAnnualReturnInceptionDate	Sep. 30, 2005

[1] Harding Loevner LP has contractually agreed to waive a portion of its management fee and/or reimburse the Portfolio for its other operating expenses to the extent Total Annual Portfolio Operating Expenses, as a percentage of average daily net assets, exceed 1.25% through February 28, 2014.

[2] After-tax returns in the table above are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. In some cases, the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Portfolio shares at the end of the measurement period. Actual after-tax returns depend on an investor's tax situation and may differ from those shown, and after-tax returns shown are not relevant to investors who hold their Portfolio shares through tax-deferred arrangements, such as 401(k) plans or Individual Retirement Accounts.

XML

Advisor | Harding Loevner Global Equity Portfolio

PORTFOLIO SUMMARIES
Global Equity Portfolio

Investment Objective

The Global Equity Portfolio (the “Portfolio”) seeks long-term capital appreciation through investments in equity securities of companies based both inside and outside the United States.

Portfolio Fees and Expenses

This table describes the fees and expenses that you may pay if you buy and hold shares of the Advisor Class of the Portfolio. There is no sales charge imposed on purchases of shares.

Shareholder Fees
(fees paid directly from your investment)

Shareholder Fees	Advisor Harding Loevner Global Equity Portfolio Advisor Class
Redemption Fee (as a percentage of amount redeemed within 90 days or less from the date of purchase)	2.00%

Annual Portfolio Operating Expenses
(expenses that you pay each
year as a percentage of the value of your
investment)

Annual Fund Operating Expenses		Advisor Harding Loevner Global Equity Portfolio Advisor Class
Management Fees	[1]	0.85%
Distribution (12b-1) Fees	[1]	none
Other Expenses	[1]	0.40%
Total Annual Portfolio Operating Expenses	[1]	1.25%
Fee Waiver and/or Expense Reimbursement	[1][2]	none
Total Annual Portfolio Operating Expenses After Fee Waiver and/or Expense Reimbursement	[1][2]	1.25%

■    Example:

This example is intended to help you compare the cost of investing in the Advisor Class of the Portfolio with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Advisor Class of the Portfolio for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Advisor Class’s operating expenses remain the same, except that the example assumes that the fee waiver and expense reimbursement agreement pertains only through February 28, 2014. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example (USD $)	1 Year	3 Years	5 Years	10 Years
Advisor Harding Loevner Global Equity Portfolio Advisor Class	127	397	686	1,511

Portfolio Turnover

The Portfolio pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Portfolio shares are held in a taxable account. These costs, which are not reflected in annual portfolio operating expenses or in the Example, affect the Portfolio’s performance. During the most recent fiscal year, the Portfolio’s portfolio turnover rate was 32% of the average value of its portfolio.

Principal Investment Strategies

The Portfolio invests in companies based in the U.S. and other developed markets, as well as in emerging and frontier markets. Harding Loevner LP (“Harding Loevner”), the Portfolio’s investment adviser, undertakes fundamental research in an effort to identify companies that are well managed, financially sound, fast growing and strongly competitive, and whose shares are under-priced relative to their intrinsic value. To reduce its volatility, the Portfolio is diversified across dimensions of geography, industry, currency and market capitalization. The Portfolio normally holds 35-75 investments across at least 15 countries. The Portfolio will normally invest broadly in equity securities of companies domiciled in the following countries and regions: (1) Europe; (2) the Pacific Rim; (3) the United States, Canada and Mexico; and (4) countries with emerging or frontier markets. At least 65% of total assets will be denominated in at least three currencies, which may include the U.S. dollar. For purposes of compliance with this restriction, American Depositary Receipts, Global Depositary Receipts, and European Depositary Receipts (collectively, “Depositary Receipts”), will be considered to be denominated in the currency of the country where the securities underlying the Depositary Receipts are traded.

The Portfolio invests at least 80% of its net assets (plus any borrowings for investment purposes) in common stocks, preferred stocks, rights and warrants issued by companies that are based both inside and outside the United States, securities convertible into such securities (including Depositary Receipts), and investment companies that invest in the types of securities in which the Portfolio would normally invest. This strategy is not fundamental, but should the Portfolio decide to change this strategy, it will provide shareholders with at least 60 days’ prior written notice.

The Portfolio may also invest in derivatives, including forward foreign currency exchange contracts and equity derivative securities such as participation notes; options on common stocks; and options, futures, and options on futures on foreign common stock indices. Because some emerging market countries do not permit foreigners to participate directly in their securities markets or otherwise present difficulties for efficient foreign investment, the Portfolio may use equity derivative securities, and, in particular, participation notes, to gain exposure to those countries.

Principal Risks

The Portfolio is subject to numerous risks, any of which could cause an investor to lose money. The principal risks of the Portfolio are as follows:

• Market Risk:  Investments in the Portfolio may lose value due to a general downturn in stock markets.

• Currency Risk:  Foreign currencies may experience steady or sudden devaluation relative to the U.S. dollar, adversely affecting the value of the Portfolio’s investments. Because the Portfolio’s net asset value is determined on the basis of U.S. dollars, if the local currency of a foreign market depreciates against the U.S. dollar, you may lose money even if the foreign market prices of the Portfolio’s holdings rise.

• Foreign Investment Risk:  Securities issued by foreign entities involve risks not associated with U.S. investments. These risks include additional taxation, political, economic, social or diplomatic instability, and the above-mentioned possibility of changes in foreign currency exchange rates. There may also be less publicly-available information about a foreign issuer.

• Emerging and Frontier Market Risk:  Emerging and frontier market securities involve unique risks, such as exposure to economies less diverse and mature than that of the U.S. or more established foreign markets. Economic or political instability may cause larger price changes in emerging or frontier market securities than in securities of issuers based in more developed foreign countries.

• Participation Notes Risk:  Participation notes are designed to replicate the return of a particular underlying equity or debt security, currency or market. Participation notes involve the same risks associated with a direct investment in the underlying security, currency or market. In addition, participation notes involve counterparty risk, because the Portfolio has no rights against the issuer(s) of the underlying security(ies) and must rely on the creditworthiness of the issuer of the participation note.

• Small- and Mid-Capitalization Risk:  The securities of smaller and medium-sized companies have historically exhibited more volatility with a lower degree of liquidity than larger companies.

Portfolio Performance

The bar chart below shows how the Portfolio’s investment results have varied from year to year. The table that follows shows how the Portfolio’s Advisor Class average annual total returns compare with a broad measure of market performance. Together, these provide an indication of the risks of investing in the Portfolio. How the Advisor Class of the Portfolio has performed in the past (before and after taxes) is not necessarily an indication of how it will perform in the future.

Updated Portfolio performance information is available at www.hardingloevnerfunds.com or by calling (877) 435-8105.

Global Equity Portfolio

The best calendar quarter return during the period shown above was 20.80% in the 2nd quarter of 2009; the worst was -21.42% in the 4th quarter of 2008.

Average Annual Total Returns
(for the periods ended December 31, 2012)

Average Annual Total Returns Advisor Harding Loevner Global Equity Portfolio		1-Year	5-Year	10-Year
Advisor Class		17.05%	1.35%	9.23%
Advisor Class Return After Taxes on Distributions	[1]	17.02%	1.27%	8.92%
Advisor Class Return After Taxes on Distributions and Sale of Portfolio Shares	[1]	11.12%	1.14%	8.21%
MSCI All Country World (net) Index (reflects no deduction for fees, expenses, or taxes)		16.13%	(1.16%)	8.11%

[1] Expense information in this table has been restated to reflect current fees. Therefore, the expenses in this table will not correlate to the expenses shown in the Financial Highlights of the Portfolio.

[2] Harding Loevner LP has contractually agreed to waive a portion of its management fee and/or reimburse the Portfolio for its other operating expenses to the extent Total Annual Portfolio Operating Expenses, as a percentage of average daily net assets, exceed 1.25% through February 28, 2014.

[1] After-tax returns in the table above are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. In some cases, the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Portfolio shares at the end of the measurement period. Actual after-tax returns depend on an investor's tax situation and may differ from those shown, and after-tax returns shown are not relevant to investors who hold their Portfolio shares through tax-deferred arrangements, such as 401(k) plans or Individual Retirement Accounts.

XML

Institutional | Harding Loevner International Equity Portfolio

International Equity Portfolio

Investment Objective

The International Equity Portfolio (the “Portfolio”) seeks long-term capital appreciation through investments in equity securities of companies based outside the United States.

Portfolio Fees and Expenses

This table describes the fees and expenses that you may pay if you buy and hold shares of the Institutional Class of the Portfolio. There is no sales charge imposed on purchases of shares.

Shareholder Fees
(fees paid directly from your investment)

Shareholder Fees	Institutional Harding Loevner International Equity Portfolio Institutional Class
Redemption Fee (as a percentage of amount redeemed within 90 days or less from the date of purchase)	2.00%

Annual Portfolio Operating Expenses
(expenses that you pay each year as a percentage of the
value of your investment)

Annual Fund Operating Expenses		Institutional Harding Loevner International Equity Portfolio Institutional Class
Management Fees		0.74%
Distribution (12b-1) Fees		none
Other Expenses		0.13%
Total Annual Portfolio Operating Expenses		0.87%
Fee Waiver and/or Expense Reimbursement	[1]	none
Total Annual Portfolio Operating Expenses After Fee Waiver and/or Expense Reimbursement	[1]	0.87%

■    Example:

This example is intended to help you compare the cost of investing in the Institutional Class of the Portfolio with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Institutional Class of the Portfolio for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Institutional Class’s operating expenses remain the same, except the example assumes that the fee waiver and expense reimbursement agreement pertains only through February 28, 2014. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example (USD $)	1 Year	3 Years	5 Years	10 Years
Institutional Harding Loevner International Equity Portfolio Institutional Class	89	278	482	1,073

Portfolio Turnover

The Portfolio pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Portfolio shares are held in a taxable account. These costs, which are not reflected in annual portfolio operating expenses or in the Example, affect the Portfolio’s performance. During the most recent fiscal year, the Portfolio’s portfolio turnover rate was 14% of the average value of its portfolio.

Principal Investment Strategies

The Portfolio invests in companies based in developed markets outside the U.S. as well as in established companies in emerging and frontier markets. Harding Loevner LP (“Harding Loevner”), the Portfolio’s investment adviser, undertakes fundamental research in an effort to identify companies that are well managed, financially sound, fast growing and strongly competitive and whose shares are under-priced relative to their intrinsic value. To reduce its volatility, the Portfolio is diversified across dimensions of geography, industry, currency and market capitalization. The Portfolio normally holds 35-75 investments across at least 15 countries.

Factors bearing on whether a company is considered to be “based” outside the United States may include: (1) it is legally domiciled outside the United States; (2) it conducts at least 50% of its business, as measured by the location of its sales, earnings, assets, or production, outside the United States; or (3) it has the principal exchange listing for its securities outside the United States.

The Portfolio will normally invest broadly in equity securities of companies domiciled in the following countries and regions: (1) Europe; (2) the Pacific Rim; (3) Canada and Mexico; and (4) countries with emerging or frontier markets. At least 65% of total assets will be denominated in at least three currencies other than the U.S. Dollar. For purposes of compliance with this restriction, American Depositary Receipts, Global Depositary Receipts, and European Depositary Receipts (collectively, “Depositary Receipts”), will be considered to be denominated in the currency of the country where the securities underlying the Depositary Receipts are traded.

The Portfolio invests at least 80% of its net assets (plus any borrowings for investment purposes) in common stocks, preferred stocks, rights and warrants issued by companies that are based outside the United States, securities convertible into such securities (including Depositary Receipts), and investment companies that invest in the types of securities in which the Portfolio would normally invest. This strategy is not fundamental, but should the Portfolio decide to change this strategy, it will provide shareholders with at least 60 days’ prior written notice. The Portfolio also may invest in securities of U.S. companies that derive, or are expected to derive, a significant portion of their revenues from their foreign operations, although under normal circumstances not more than 15% of the Portfolio’s total assets will be invested in securities of U.S. companies.

Principal Risks

The Portfolio is subject to numerous risks, any of which could cause an investor to lose money. The principal risks of the Portfolio are as follows:

• Market Risk:  Investments in the Portfolio may lose value due to a general downturn in stock markets.

• Currency Risk:  Foreign currencies may experience steady or sudden devaluation relative to the U.S. dollar, adversely affecting the value of the Portfolio’s investments. Because the Portfolio’s net asset value is determined on the basis of U.S. dollars, if the local currency of a foreign market depreciates against the U.S. dollar, you may lose money even if the foreign market prices of the Portfolio’s holdings rise.

• Foreign Investment Risk:  Securities issued by foreign entities involve risks not associated with U.S. investments. These risks include additional taxation, political, economic, social or diplomatic instability, and the above-mentioned possibility of changes in foreign currency exchange rates. There may also be less publicly-available information about a foreign issuer.

• Emerging and Frontier Market Risk:  Emerging and frontier market securities involve unique risks, such as exposure to economies less diverse and mature than that of the U.S. or more established foreign markets. Economic or political instability may cause larger price changes in emerging or frontier market securities than in securities of issuers based in more developed foreign countries.

Portfolio Performance

The bar chart below shows how the Portfolio’s investment results have varied from year to year. The table that follows shows how the Portfolio’s Institutional Class average annual total returns compare with a broad measure of market performance. Together, these provide an indication of the risks of investing in the Portfolio. How the Institutional Class of the Portfolio has performed in the past (before and after taxes) is not necessarily an indication of how it will perform in the future.

Updated Portfolio performance information is available at www.hardingloevnerfunds.com or by calling (877) 435-8105.

International Equity Portfolio

The best calendar quarter return during the period shown above was 21.43% in the 2nd quarter of 2009; the worst was -22.12% in the 4th quarter of 2008.

Average Annual Total Returns
(for the periods ended December 31, 2012)

Average Annual Total Returns Institutional Harding Loevner International Equity Portfolio		1-Year	5-Year	10-Year
Institutional Class		20.28%	1.72%	9.93%
Institutional Class Return After Taxes on Distributions	[1]	20.14%	1.05%	9.34%
Institutional Class Return After Taxes on Distributions and Sale of Portfolio Shares	[1]	13.38%	1.28%	8.78%
MSCI All Country World ex-U.S. (net) Index (reflects no deduction for fees, expenses, or taxes)		16.84%	(2.89%)	9.75%

[1] Harding Loevner LP has contractually agreed to waive a portion of its management fee and/or reimburse the Portfolio for its other operating expenses to the extent Total Annual Portfolio Operating Expenses, as a percentage of average daily net assets, exceed 1.00% through February 28, 2014.

[1] After-tax returns in the table above are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. In some cases, the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Portfolio shares at the end of the measurement period. Actual after-tax returns depend on an investor's tax situation and may differ from those shown, and after-tax returns shown are not relevant to investors who hold their Portfolio shares through tax-deferred arrangements, such as 401(k) plans or Individual Retirement Accounts.

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	HARDING LOEVNER FUNDS INC
Prospectus Date	rr_ProspectusDate	Feb. 28, 2013
Advisor | Harding Loevner Global Equity Portfolio
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	PORTFOLIO SUMMARIES Global Equity Portfolio
Objective [Heading]	rr_ObjectiveHeading	Investment Objective
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	The Global Equity Portfolio (the “Portfolio”) seeks long-term capital appreciation through investments in equity securities of companies based both inside and outside the United States.
Expense [Heading]	rr_ExpenseHeading	Portfolio Fees and Expenses
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	This table describes the fees and expenses that you may pay if you buy and hold shares of the Advisor Class of the Portfolio. There is no sales charge imposed on purchases of shares.
Shareholder Fees Caption [Text]	rr_ShareholderFeesCaption	Shareholder Fees (fees paid directly from your investment)
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	Annual Portfolio Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Fee Waiver or Reimbursement over Assets, Date of Termination	rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination	February 28, 2014
Portfolio Turnover [Heading]	rr_PortfolioTurnoverHeading	Portfolio Turnover
Portfolio Turnover [Text Block]	rr_PortfolioTurnoverTextBlock	The Portfolio pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Portfolio shares are held in a taxable account. These costs, which are not reflected in annual portfolio operating expenses or in the Example, affect the Portfolio’s performance. During the most recent fiscal year, the Portfolio’s portfolio turnover rate was 32% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	32.00%
Expenses Restated to Reflect Current [Text]	rr_ExpensesRestatedToReflectCurrent	Expense information in this table has been restated to reflect current fees.
Expense Example [Heading]	rr_ExpenseExampleHeading	■    Example:
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	This example is intended to help you compare the cost of investing in the Advisor Class of the Portfolio with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Advisor Class of the Portfolio for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Advisor Class’s operating expenses remain the same, except that the example assumes that the fee waiver and expense reimbursement agreement pertains only through February 28, 2014. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Strategy [Heading]	rr_StrategyHeading	Principal Investment Strategies
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	The Portfolio invests in companies based in the U.S. and other developed markets, as well as in emerging and frontier markets. Harding Loevner LP (“Harding Loevner”), the Portfolio’s investment adviser, undertakes fundamental research in an effort to identify companies that are well managed, financially sound, fast growing and strongly competitive, and whose shares are under-priced relative to their intrinsic value. To reduce its volatility, the Portfolio is diversified across dimensions of geography, industry, currency and market capitalization. The Portfolio normally holds 35-75 investments across at least 15 countries. The Portfolio will normally invest broadly in equity securities of companies domiciled in the following countries and regions: (1) Europe; (2) the Pacific Rim; (3) the United States, Canada and Mexico; and (4) countries with emerging or frontier markets. At least 65% of total assets will be denominated in at least three currencies, which may include the U.S. dollar. For purposes of compliance with this restriction, American Depositary Receipts, Global Depositary Receipts, and European Depositary Receipts (collectively, “Depositary Receipts”), will be considered to be denominated in the currency of the country where the securities underlying the Depositary Receipts are traded. The Portfolio invests at least 80% of its net assets (plus any borrowings for investment purposes) in common stocks, preferred stocks, rights and warrants issued by companies that are based both inside and outside the United States, securities convertible into such securities (including Depositary Receipts), and investment companies that invest in the types of securities in which the Portfolio would normally invest. This strategy is not fundamental, but should the Portfolio decide to change this strategy, it will provide shareholders with at least 60 days’ prior written notice. The Portfolio may also invest in derivatives, including forward foreign currency exchange contracts and equity derivative securities such as participation notes; options on common stocks; and options, futures, and options on futures on foreign common stock indices. Because some emerging market countries do not permit foreigners to participate directly in their securities markets or otherwise present difficulties for efficient foreign investment, the Portfolio may use equity derivative securities, and, in particular, participation notes, to gain exposure to those countries.
Risk [Heading]	rr_RiskHeading	Principal Risks
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	The Portfolio is subject to numerous risks, any of which could cause an investor to lose money. The principal risks of the Portfolio are as follows: Market Risk:  Investments in the Portfolio may lose value due to a general downturn in stock markets. Currency Risk:  Foreign currencies may experience steady or sudden devaluation relative to the U.S. dollar, adversely affecting the value of the Portfolio’s investments. Because the Portfolio’s net asset value is determined on the basis of U.S. dollars, if the local currency of a foreign market depreciates against the U.S. dollar, you may lose money even if the foreign market prices of the Portfolio’s holdings rise. Foreign Investment Risk:  Securities issued by foreign entities involve risks not associated with U.S. investments. These risks include additional taxation, political, economic, social or diplomatic instability, and the above-mentioned possibility of changes in foreign currency exchange rates. There may also be less publicly-available information about a foreign issuer. Emerging and Frontier Market Risk:  Emerging and frontier market securities involve unique risks, such as exposure to economies less diverse and mature than that of the U.S. or more established foreign markets. Economic or political instability may cause larger price changes in emerging or frontier market securities than in securities of issuers based in more developed foreign countries. Participation Notes Risk:  Participation notes are designed to replicate the return of a particular underlying equity or debt security, currency or market. Participation notes involve the same risks associated with a direct investment in the underlying security, currency or market. In addition, participation notes involve counterparty risk, because the Portfolio has no rights against the issuer(s) of the underlying security(ies) and must rely on the creditworthiness of the issuer of the participation note. Small- and Mid-Capitalization Risk:  The securities of smaller and medium-sized companies have historically exhibited more volatility with a lower degree of liquidity than larger companies.
Risk Lose Money [Text]	rr_RiskLoseMoney	The Portfolio is subject to numerous risks, any of which could cause an investor to lose money.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	Portfolio Performance
Performance Narrative [Text Block]	rr_PerformanceNarrativeTextBlock	The bar chart below shows how the Portfolio’s investment results have varied from year to year. The table that follows shows how the Portfolio’s Advisor Class average annual total returns compare with a broad measure of market performance. Together, these provide an indication of the risks of investing in the Portfolio. How the Advisor Class of the Portfolio has performed in the past (before and after taxes) is not necessarily an indication of how it will perform in the future. Updated Portfolio performance information is available at www.hardingloevnerfunds.com or by calling (877) 435-8105.
Performance Information Illustrates Variability of Returns [Text]	rr_PerformanceInformationIllustratesVariabilityOfReturns	The bar chart below shows how the Portfolio’s investment results have varied from year to year. The table that follows shows how the Portfolio’s Advisor Class average annual total returns compare with a broad measure of market performance.
Performance Availability Phone [Text]	rr_PerformanceAvailabilityPhone	(877) 435-8105
Performance Availability Website Address [Text]	rr_PerformanceAvailabilityWebSiteAddress	www.hardingloevnerfunds.com
Performance Past Does Not Indicate Future [Text]	rr_PerformancePastDoesNotIndicateFuture	How the Advisor Class of the Portfolio has performed in the past (before and after taxes) is not necessarily an indication of how it will perform in the future.
Bar Chart [Heading]	rr_BarChartHeading	Global Equity Portfolio
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	The best calendar quarter return during the period shown above was 20.80% in the 2nd quarter of 2009; the worst was -21.42% in the 4th quarter of 2008.
Performance Table Heading	rr_PerformanceTableHeading	Average Annual Total Returns (for the periods ended December 31, 2012)
Performance Table Uses Highest Federal Rate	rr_PerformanceTableUsesHighestFederalRate	After-tax returns in the table above are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred	rr_PerformanceTableNotRelevantToTaxDeferred	Actual after-tax returns depend on an investor’s tax situation and may differ from those shown, and after-tax returns shown are not relevant to investors who hold their Portfolio shares through tax-deferred arrangements, such as 401(k) plans or Individual Retirement Accounts.
Performance Table Explanation after Tax Higher	rr_PerformanceTableExplanationAfterTaxHigher	In some cases, the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Portfolio shares at the end of the measurement period.
Advisor | Harding Loevner Global Equity Portfolio | Advisor Class
Risk/Return:	rr_RiskReturnAbstract
Redemption Fee (as a percentage of amount redeemed within 90 days or less from the date of purchase)	rr_RedemptionFeeOverRedemption	2.00%
Management Fees	rr_ManagementFeesOverAssets	0.85%	[1]
Distribution (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none	[1]
Other Expenses	rr_OtherExpensesOverAssets	0.40%	[1]
Total Annual Portfolio Operating Expenses	rr_ExpensesOverAssets	1.25%	[1]
Fee Waiver and/or Expense Reimbursement	rr_FeeWaiverOrReimbursementOverAssets	none	[1],[2]
Total Annual Portfolio Operating Expenses After Fee Waiver and/or Expense Reimbursement	rr_NetExpensesOverAssets	1.25%	[1],[2]
1 Year	rr_ExpenseExampleYear01	127
3 Years	rr_ExpenseExampleYear03	397
5 Years	rr_ExpenseExampleYear05	686
10 Years	rr_ExpenseExampleYear10	1,511
2003	rr_AnnualReturn2003	31.38%
2004	rr_AnnualReturn2004	7.61%
2005	rr_AnnualReturn2005	16.65%
2006	rr_AnnualReturn2006	17.84%
2007	rr_AnnualReturn2007	16.39%
2008	rr_AnnualReturn2008	(38.29%)
2009	rr_AnnualReturn2009	40.11%
2010	rr_AnnualReturn2010	15.29%
2011	rr_AnnualReturn2011	(8.36%)
2012	rr_AnnualReturn2012	17.05%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	best calendar quarter return
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Jun. 30, 2009
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	20.80%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	the worst
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Dec. 31, 2008
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(21.42%)
1-Year	rr_AverageAnnualReturnYear01	17.05%
5-Year	rr_AverageAnnualReturnYear05	1.35%
10-Year	rr_AverageAnnualReturnYear10	9.23%
Advisor | Harding Loevner Global Equity Portfolio | Return After Taxes on Distributions | Advisor Class
Risk/Return:	rr_RiskReturnAbstract
1-Year	rr_AverageAnnualReturnYear01	17.02%	[3]
5-Year	rr_AverageAnnualReturnYear05	1.27%	[3]
10-Year	rr_AverageAnnualReturnYear10	8.92%	[3]
Advisor | Harding Loevner Global Equity Portfolio | Return After Taxes on Distributions and Sale of Portfolio Shares | Advisor Class
Risk/Return:	rr_RiskReturnAbstract
1-Year	rr_AverageAnnualReturnYear01	11.12%	[3]
5-Year	rr_AverageAnnualReturnYear05	1.14%	[3]
10-Year	rr_AverageAnnualReturnYear10	8.21%	[3]
Advisor | Harding Loevner Global Equity Portfolio | MSCI All Country World (net) Index (reflects no deduction for fees, expenses, or taxes)
Risk/Return:	rr_RiskReturnAbstract
1-Year	rr_AverageAnnualReturnYear01	16.13%
5-Year	rr_AverageAnnualReturnYear05	(1.16%)
10-Year	rr_AverageAnnualReturnYear10	8.11%

[1] Expense information in this table has been restated to reflect current fees. Therefore, the expenses in this table will not correlate to the expenses shown in the Financial Highlights of the Portfolio.

[2] Harding Loevner LP has contractually agreed to waive a portion of its management fee and/or reimburse the Portfolio for its other operating expenses to the extent Total Annual Portfolio Operating Expenses, as a percentage of average daily net assets, exceed 1.25% through February 28, 2014.

[3] After-tax returns in the table above are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. In some cases, the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Portfolio shares at the end of the measurement period. Actual after-tax returns depend on an investor's tax situation and may differ from those shown, and after-tax returns shown are not relevant to investors who hold their Portfolio shares through tax-deferred arrangements, such as 401(k) plans or Individual Retirement Accounts.

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	HARDING LOEVNER FUNDS INC
Prospectus Date	rr_ProspectusDate	Feb. 28, 2013
Institutional | Harding Loevner Institutional Emerging Markets Portfolio
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	Institutional Emerging Markets Portfolio
Objective [Heading]	rr_ObjectiveHeading	Investment Objective
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	The Institutional Emerging Markets Portfolio (the “Portfolio”) seeks long-term capital appreciation through investments in equity securities of companies based in emerging markets.
Expense [Heading]	rr_ExpenseHeading	Portfolio Fees and Expenses
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	This table describes the fees and expenses that you may pay if you buy and hold shares of the Portfolio. There is no sales charge imposed on purchases of shares.
Shareholder Fees Caption [Text]	rr_ShareholderFeesCaption	Shareholder Fees (fees paid directly from your investment)
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	Annual Portfolio Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Fee Waiver or Reimbursement over Assets, Date of Termination	rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination	February 28, 2014
Portfolio Turnover [Heading]	rr_PortfolioTurnoverHeading	Portfolio Turnover
Portfolio Turnover [Text Block]	rr_PortfolioTurnoverTextBlock	The Portfolio pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Portfolio shares are held in a taxable account. These costs, which are not reflected in annual portfolio operating expenses or in the Example, affect the Portfolio’s performance. During the most recent fiscal year, the Portfolio’s portfolio turnover rate was 42% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	42.00%
Expenses Restated to Reflect Current [Text]	rr_ExpensesRestatedToReflectCurrent	Expense information in this table has been restated to reflect current fees.
Expense Example [Heading]	rr_ExpenseExampleHeading	■    Example:
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	This example is intended to help you compare the cost of investing in the Portfolio with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Portfolio for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Portfolio’s operating expenses remain the same, except that the example assumes that the fee waiver and expense reimbursement pertains only through February 28, 2014. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Strategy [Heading]	rr_StrategyHeading	Principal Investment Strategies
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	The Portfolio invests primarily in companies that are based in emerging and frontier markets. It may also invest in short-term or other debt securities. Emerging and frontier markets offer investment opportunities that arise from long-term trends in demographics, deregulation, offshore outsourcing and improving corporate governance in developing countries. Harding Loevner LP (“Harding Loevner”), the Portfolio’s investment adviser, undertakes fundamental research in an effort to identify companies that are well managed, financially sound, fast growing and strongly competitive, and whose shares are under-priced relative to their intrinsic value. To reduce its volatility, the Portfolio is diversified across dimensions of geography, industry and currency. The Portfolio normally holds 50-80 investments across at least 15 countries. Emerging and frontier markets include countries that have an emerging stock market as defined by Morgan Stanley Capital International, countries or markets with low- to middle-income economies as classified by the World Bank, and other countries or markets with similar characteristics. Emerging and frontier markets tend to have relatively low gross national product per capita compared to the world’s major economies and may have the potential for rapid economic growth. Factors bearing on whether a company is considered to be “based” in an emerging or frontier market may include: (1) it is legally domiciled in an emerging or frontier market; (2) it conducts at least 50% of its business, as measured by the location of its sales, earnings, assets, or production, in an emerging or frontier market; or (3) it has the principal exchange listing for its securities in an emerging or frontier market. The Portfolio will invest broadly in equity and debt securities of companies domiciled in one of at least 15 countries with emerging or frontier markets, generally considered to include all countries except Australia, Austria, Belgium, Canada, Denmark, Finland, France, Germany, Greece, Hong Kong, Ireland, Israel, Italy, Japan, the Netherlands, New Zealand, Norway, Portugal, Singapore, Spain, Sweden, Switzerland, the United Kingdom and the United States. At least 65% of the Portfolio’s total assets will be denominated in at least three currencies other than the U.S. Dollar. For purposes of compliance with this restriction, American Depositary Receipts, Global Depositary Receipts and European Depositary Receipts (collectively, “Depositary Receipts”) will be considered to be denominated in the currency of the country where the securities underlying the Depositary Receipts are traded. The Portfolio invests at least 65% of its total assets in common stocks, preferred stocks, rights and warrants issued by companies that are based in emerging or frontier markets, securities convertible into such securities (including Depositary Receipts), and investment companies that invest in the types of securities in which the Portfolio would normally invest. The Portfolio also may invest in securities of U.S. companies that derive, or are expected to derive, a significant portion of their revenues from their foreign operations, although under normal circumstances, not more than 15% of the Portfolio’s total assets will be invested in securities of U.S. companies. The Portfolio also may invest up to 35% of its total assets in debt securities of domestic and foreign issuers, including such instruments as corporate bonds, debentures, notes, commercial paper, short-term notes, medium-term notes and variable rate notes. The Portfolio invests at least 80% of its net assets (plus any borrowings for investment purposes) in emerging and frontier markets securities. This strategy is not fundamental, but should the Portfolio decide to change this strategy, it will provide shareholders with at least 60 days’ prior written notice. The Portfolio also may invest in derivatives, including forward foreign currency exchange contracts and equity derivative securities such as participation notes; options on common stocks; and options, futures and options on futures on foreign common stock indices. Because some emerging market countries do not permit foreigners to participate directly in their securities markets or otherwise present difficulties for efficient foreign investment, the Portfolio may use equity derivative securities, and, in particular, participation notes, to gain exposure to those countries.
Risk [Heading]	rr_RiskHeading	Principal Risks
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	The Portfolio is subject to numerous risks, any of which could cause an investor to lose money. The principal risks of the Portfolio are as follows: Market Risk:  Investments in the Portfolio may lose value due to a general downturn in stock markets. Currency Risk:  Foreign currencies may experience steady or sudden devaluation relative to the U.S. dollar, adversely affecting the value of the Portfolio’s investments. Because the Portfolio’s net asset value is determined on the basis of U.S. dollars, if the local currency of a foreign market depreciates against the U.S. dollar, you may lose money even if the foreign market prices of the Portfolio’s holdings rise. Foreign Investment Risk:  Securities issued by foreign entities involve risks not associated with U.S. investments. These risks include additional taxation, political, economic, social or diplomatic instability, and the above-mentioned possibility of changes in foreign currency exchange rates. There may also be less publicly-available information about a foreign issuer. Emerging and Frontier Market Risk:  Emerging and frontier market securities involve unique risks, such as exposure to economies less diverse and mature than that of the U.S. or more established foreign markets. Economic or political instability may cause larger price changes in emerging or frontier market securities than in securities of issuers based in more developed foreign countries. Debt Securities Risk:  Debt securities may lose value due to unfavorable fluctuations in the level of interest rates or due to a decline in the creditworthiness of the issuer. As interest rates rise, the value of debt securities declines. This risk is generally greater for debt securities with longer maturities than for debt securities with shorter maturities. Participation Notes Risk:  Participation notes are designed to replicate the return of a particular underlying equity or debt security, currency or market. Participation notes involve the same risks associated with a direct investment in the underlying security, currency or market. In addition, participation notes involve counterparty risk, because the Portfolio has no rights against the issuer(s) of the underlying security(ies) and must rely on the creditworthiness of the issuer of the participation note.
Risk Lose Money [Text]	rr_RiskLoseMoney	The Portfolio is subject to numerous risks, any of which could cause an investor to lose money.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	Portfolio Performance
Performance Narrative [Text Block]	rr_PerformanceNarrativeTextBlock	The bar chart below shows how the Portfolio’s investment results have varied from year to year. The table that follows shows how the Portfolio’s average annual total returns compare with a broad measure of market performance. Together, these provide an indication of the risks of investing in the Portfolio. How the Portfolio has performed in the past (before and after taxes) is not necessarily an indication of how it will perform in the future. Updated Portfolio performance information is available at www.hardingloevnerfunds.com or by calling (877) 435-8105.
Performance Information Illustrates Variability of Returns [Text]	rr_PerformanceInformationIllustratesVariabilityOfReturns	The bar chart below shows how the Portfolio’s investment results have varied from year to year. The table that follows shows how the Portfolio’s average annual total returns compare with a broad measure of market performance.
Performance Availability Phone [Text]	rr_PerformanceAvailabilityPhone	(877) 435-8105
Performance Availability Website Address [Text]	rr_PerformanceAvailabilityWebSiteAddress	www.hardingloevnerfunds.com
Performance Past Does Not Indicate Future [Text]	rr_PerformancePastDoesNotIndicateFuture	How the Portfolio has performed in the past (before and after taxes) is not necessarily an indication of how it will perform in the future.
Bar Chart [Heading]	rr_BarChartHeading	Institutional Emerging Markets Portfolio
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	The best calendar quarter return during the period shown above was 33.22% in the 2nd quarter of 2009; the worst was -28.41% in the 4th quarter of 2008.
Performance Table Heading	rr_PerformanceTableHeading	Average Annual Total Returns (for the periods ended December 31, 2012)
Performance Table Uses Highest Federal Rate	rr_PerformanceTableUsesHighestFederalRate	After-tax returns in the table above are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred	rr_PerformanceTableNotRelevantToTaxDeferred	Actual after-tax returns depend on an investor’s tax situation and may differ from those shown, and after-tax returns shown are not relevant to investors who hold their Portfolio shares through tax-deferred arrangements, such as 401(k) plans or Individual Retirement Accounts.
Performance Table Explanation after Tax Higher	rr_PerformanceTableExplanationAfterTaxHigher	In some cases, the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Portfolio shares at the end of the measurement period.
Institutional | Harding Loevner Institutional Emerging Markets Portfolio | Institutional Class
Risk/Return:	rr_RiskReturnAbstract
Redemption Fee (as a percentage of amount redeemed within 90 days or less from the date of purchase)	rr_RedemptionFeeOverRedemption	2.00%
Management Fees	rr_ManagementFeesOverAssets	1.15%	[1]
Distribution (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none	[1]
Other Expenses	rr_OtherExpensesOverAssets	0.19%	[1]
Total Annual Portfolio Operating Expenses	rr_ExpensesOverAssets	1.34%	[1]
Fee Waiver and/or Expense Reimbursement	rr_FeeWaiverOrReimbursementOverAssets	(0.04%)	[1],[2]
Total Annual Portfolio Operating Expenses After Fee Waiver and/or Expense Reimbursement	rr_NetExpensesOverAssets	1.30%	[1]
1 Year	rr_ExpenseExampleYear01	132
3 Years	rr_ExpenseExampleYear03	421
5 Years	rr_ExpenseExampleYear05	730
10 Years	rr_ExpenseExampleYear10	1,609
2006	rr_AnnualReturn2006	30.10%
2007	rr_AnnualReturn2007	36.27%
2008	rr_AnnualReturn2008	(52.48%)
2009	rr_AnnualReturn2009	63.97%
2010	rr_AnnualReturn2010	20.80%
2011	rr_AnnualReturn2011	(16.97%)
2012	rr_AnnualReturn2012	22.46%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	best calendar quarter return
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Jun. 30, 2009
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	33.22%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	the worst
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Dec. 31, 2008
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(28.41%)
1-Year	rr_AverageAnnualReturnYear01	22.46%
5-Year	rr_AverageAnnualReturnYear05	(0.88%)
Since Inception	rr_AverageAnnualReturnSinceInception	9.56%
Inception Date	rr_AverageAnnualReturnInceptionDate	Oct. 17, 2005
Institutional | Harding Loevner Institutional Emerging Markets Portfolio | Return After Taxes on Distributions | Institutional Class
Risk/Return:	rr_RiskReturnAbstract
1-Year	rr_AverageAnnualReturnYear01	22.33%	[3]
5-Year	rr_AverageAnnualReturnYear05	(1.00%)	[3]
Since Inception	rr_AverageAnnualReturnSinceInception	9.36%	[3]
Inception Date	rr_AverageAnnualReturnInceptionDate	Oct. 17, 2005	[3]
Institutional | Harding Loevner Institutional Emerging Markets Portfolio | Return After Taxes on Distributions and Sale of Portfolio Shares | Institutional Class
Risk/Return:	rr_RiskReturnAbstract
1-Year	rr_AverageAnnualReturnYear01	14.76%	[3]
5-Year	rr_AverageAnnualReturnYear05	(0.73%)	[3]
Since Inception	rr_AverageAnnualReturnSinceInception	8.43%	[3]
Inception Date	rr_AverageAnnualReturnInceptionDate	Oct. 17, 2005	[3]
Institutional | Harding Loevner Institutional Emerging Markets Portfolio | MSCI Emerging Markets (net) Index (reflects no deduction for fees, expenses, or taxes)
Risk/Return:	rr_RiskReturnAbstract
1-Year	rr_AverageAnnualReturnYear01	18.23%
5-Year	rr_AverageAnnualReturnYear05	(0.92%)
Since Inception	rr_AverageAnnualReturnSinceInception	10.12%
Inception Date	rr_AverageAnnualReturnInceptionDate	Oct. 17, 2005

[1] Expense information in this table has been restated to reflect current fees. Therefore, the expenses in this table will not correlate to the expenses shown in the Financial Highlights of the Portfolio.

[2] Harding Loevner LP has contractually agreed to waive a portion of its management fee and/or reimburse the Portfolio for its other operating expenses to the extent Total Annual Portfolio Operating Expenses, as a percentage of average daily net assets, exceed 1.30% through February 28, 2014.

[3] After-tax returns in the table above are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. In some cases, the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Portfolio shares at the end of the measurement period. Actual after-tax returns depend on an investor's tax situation and may differ from those shown, and after-tax returns shown are not relevant to investors who hold their Portfolio shares through tax-deferred arrangements, such as 401(k) plans or Individual Retirement Accounts.

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Investor | Harding Loevner International Equity Portfolio

International Equity Portfolio

Investment Objective

The International Equity Portfolio (the “Portfolio”) seeks long-term capital appreciation through investments in equity securities of companies based outside the United States.

Portfolio Fees and Expenses

This table describes the fees and expenses that you may pay if you buy and hold shares of the Investor Class of the Portfolio. There is no sales charge imposed on purchases of shares.

Shareholder Fees
(fees paid directly from your investment)

Shareholder Fees	Investor Harding Loevner International Equity Portfolio Investor Class
Redemption Fee (as a percentage of amount redeemed within 90 days or less from the date of purchase)	2.00%

Annual Portfolio Operating Expenses
(expenses that you pay each year as a
percentage of the value of your investment)

Annual Fund Operating Expenses		Investor Harding Loevner International Equity Portfolio Investor Class
Management Fees		0.74%
Distribution (12b-1) Fees		0.25%
Other Expenses		0.25%
Total Annual Portfolio Operating Expenses		1.24%
Fee Waiver and/or Expense Reimbursement	[1]	none
Total Annual Portfolio Operating Expenses After Fee Waiver and/or Expense Reimbursement	[1]	1.24%

■    Example:

This example is intended to help you compare the cost of investing in the Investor Class of the Portfolio with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Investor Class of the Portfolio for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Investor Class’s operating expenses remain the same, except that the example assumes that the fee waiver and expense reimbursement agreement pertains only through February 28, 2014. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example (USD $)	1 Year	3 Years	5 Years	10 Years
Investor Harding Loevner International Equity Portfolio Investor Class	126	393	681	1,500

Portfolio Turnover

The Portfolio pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Portfolio shares are held in a taxable account. These costs, which are not reflected in annual portfolio operating expenses or in the Example, affect the Portfolio’s performance. During the most recent fiscal year, the Portfolio’s portfolio turnover rate was 14% of the average value of its portfolio.

Principal Investment Strategies

The Portfolio invests in companies based in developed markets outside the U.S. as well as in established companies in emerging and frontier markets. Harding Loevner LP (“Harding Loevner”), the Portfolio’s investment adviser, undertakes fundamental research in an effort to identify companies that are well managed, financially sound, fast growing and strongly competitive and whose shares are under-priced relative to their intrinsic value. To reduce its volatility, the Portfolio is diversified across dimensions of geography, industry, currency and market capitalization. The Portfolio normally holds 35-75 investments across at least 15 countries.

Factors bearing on whether a company is considered to be “based” outside the United States may include: (1) it is legally domiciled outside the United States; (2) it conducts at least 50% of its business, as measured by the location of its sales, earnings, assets, or production, outside the United States; or (3) it has the principal exchange listing for its securities outside the United States.

The Portfolio will normally invest broadly in equity securities of companies domiciled in the following countries and regions: (1) Europe; (2) the Pacific Rim; (3) Canada and Mexico; and (4) countries with emerging or frontier markets. At least 65% of total assets will be denominated in at least three currencies other than the U.S. Dollar. For purposes of compliance with this restriction, American Depositary Receipts, Global Depositary Receipts, and European Depositary Receipts (collectively, “Depositary Receipts”), will be considered to be denominated in the currency of the country where the securities underlying the Depositary Receipts are traded.

The Portfolio invests at least 80% of its net assets (plus any borrowings for investment purposes) in common stocks, preferred stocks, rights and warrants issued by companies that are based outside the United States, securities convertible into such securities (including Depositary Receipts), and investment companies that invest in the types of securities in which the Portfolio would normally invest. This strategy is not fundamental, but should the Portfolio decide to change this strategy, it will provide shareholders with at least 60 days’ prior written notice. The Portfolio also may invest in securities of U.S. companies that derive, or are expected to derive, a significant portion of their revenues from their foreign operations, although under normal circumstances not more than 15% of the Portfolio’s total assets will be invested in securities of U.S. companies.

The Portfolio may also invest in derivatives, including forward foreign currency exchange contracts and equity derivative securities such as participation notes; options on common stocks; and options, futures, and options on futures on foreign common stock indices. Because some emerging market countries do not permit foreigners to participate directly in their securities markets or otherwise present difficulties for efficient foreign investment, the Portfolio may use equity derivative securities, and, in particular, participation notes, to gain exposure to those countries.

Principal Risks

The Portfolio is subject to numerous risks, any of which could cause an investor to lose money. The principal risks of the Portfolio are as follows:

• Market Risk:  Investments in the Portfolio may lose value due to a general downturn in stock markets.

• Currency Risk:  Foreign currencies may experience steady or sudden devaluation relative to the U.S. dollar, adversely affecting the value of the Portfolio’s investments. Because the Portfolio’s net asset value is determined on the basis of U.S. dollars, if the local currency of a foreign market depreciates against the U.S. dollar, you may lose money even if the foreign market prices of the Portfolio’s holdings rise.

• Foreign Investment Risk:  Securities issued by foreign entities involve risks not associated with U.S. investments. These risks include additional taxation, political, economic, social or diplomatic instability, and the above-mentioned possibility of changes in foreign currency exchange rates. There may also be less publicly-available information about a foreign issuer.

• Emerging and Frontier Market Risk:  Emerging and frontier market securities involve unique risks, such as exposure to economies less diverse and mature than that of the U.S. or more established foreign markets. Economic or political instability may cause larger price changes in emerging or frontier market securities than in securities of issuers based in more developed foreign countries.

• Participation Notes Risk:  Participation notes are designed to replicate the return of a particular underlying equity or debt security, currency or market. Participation notes involve the same risks associated with a direct investment in the underlying security, currency or market. In addition, participation notes involve counterparty risk, because the Portfolio has no rights against the issuer(s) of the underlying security(ies) and must rely on the creditworthiness of the issuer of the participation note.

Portfolio Performance

The bar chart below shows how the Portfolio’s investment results have varied from year to year. The table that follows shows how the Portfolio’s Investor Class average annual total returns compare with a broad measure of market performance. Together, these provide an indication of the risks of investing in the Portfolio. How the Investor Class of the Portfolio has performed in the past (before and after taxes) is not necessarily an indication of how it will perform in the future.

Updated Portfolio performance information is available at www.hardingloevnerfunds.com or by calling (877) 435-8105.

International Equity Portfolio

The best calendar quarter return during the period shown above was 21.31% in the 2nd quarter of 2009; the worst was -22.21% in the 4th quarter of 2008.

Average Annual Total Returns
(for the periods ended December 31, 2012)

Average Annual Total Returns Investor Harding Loevner International Equity Portfolio		1-Year	5-Year	Since Inception	Inception Date
Investor Class		19.73%	1.41%	6.18%	Sep. 30, 2005
Investor Class Return After Taxes on Distributions	[1]	19.63%	0.79%	5.39%	Sep. 30, 2005
Investor Class Return After Taxes on Distributions and Sale of Portfolio Shares	[1]	12.95%	1.03%	5.23%	Sep. 30, 2005
MSCI All Country World ex-U.S. (net) Index (reflects no deduction for fees, expenses, or taxes)		16.84%	(2.89%)	4.07%	Sep. 30, 2005

[1] Harding Loevner LP has contractually agreed to waive a portion of its management fee and/or reimburse the Portfolio for its other operating expenses to the extent Total Annual Portfolio Operating Expenses, as a percentage of average daily net assets, exceed 1.25% through February 28, 2014.

[1] After-tax returns in the table above are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. In some cases, the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Portfolio shares at the end of the measurement period. Actual after-tax returns depend on an investor's tax situation and may differ from those shown, and after-tax returns shown are not relevant to investors who hold their Portfolio shares through tax-deferred arrangements, such as 401(k) plans or Individual Retirement Accounts.

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Institutional | Harding Loevner Frontier Emerging Markets Portfolio

Frontier Emerging Markets Portfolio

Investment Objective

The Frontier Emerging Markets Portfolio (the “Portfolio”) seeks long-term capital appreciation through investments in equity securities of companies based in frontier and smaller emerging markets.

Portfolio Fees and Expenses

This table describes the fees and expenses that you may pay if you buy and hold shares of the Institutional Class of the Portfolio. There is no sales charge imposed on purchases of shares.

Shareholder Fees
(fees paid directly from your investment)

Shareholder Fees	Institutional Harding Loevner Frontier Emerging Markets Portfolio Institutional Class
Redemption Fee (as a percentage of amount redeemed within 90 days or less from the date of purchase)	2.00%

Annual Portfolio Operating Expenses
(expenses that you pay each year as a percentage of the
value of your investment)

Annual Fund Operating Expenses		Institutional Harding Loevner Frontier Emerging Markets Portfolio Institutional Class
Management Fees		1.50%
Distribution (12b-1) Fees		none
Other Expenses		0.45%
Total Annual Portfolio Operating Expenses		1.95%
Fee Waiver and/or Expense Reimbursement	[1]	none
Total Annual Portfolio Operating Expenses After Fee Waiver and/or Expense Reimbursement	[1]	1.95%

■    Example:

This example is intended to help you compare the cost of investing in the Institutional Class of the Portfolio with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Institutional Class of the Portfolio for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Institutional Class’s operating expenses remain the same, except that the example assumes that the fee waiver and expense reimbursement agreement pertains only through February 28, 2014. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example (USD $)	1 Year	3 Years	5 Years	10 Years
Institutional Harding Loevner Frontier Emerging Markets Portfolio Institutional Class	198	612	1,052	2,275

Portfolio Turnover

The Portfolio pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Portfolio shares are held in a taxable account. These costs, which are not reflected in annual portfolio operating expenses or in the Example, affect the Portfolio’s performance. During the most recent fiscal year, the Portfolio’s portfolio turnover rate was 72% of the average value of its portfolio.

Principal Investment Strategies

The Portfolio invests primarily in companies that are based in frontier emerging markets, including the smaller traditionally-recognized emerging markets. Frontier emerging markets, with the exception of the oil-producing Gulf States and certain of the smaller traditionally-recognized emerging markets, tend to have relatively low gross national product per capita compared to the larger traditionally-recognized emerging markets and the world’s major developed economies. The frontier emerging markets include the least developed markets even by emerging markets standards. Frontier emerging markets offer investment opportunities that arise from long-term trends in demographics, deregulation, offshore outsourcing and improving corporate governance in developing countries. Harding Loevner LP (“Harding Loevner”), the Portfolio’s investment adviser, undertakes fundamental research in an effort to identify companies that are well managed, financially sound, fast growing and strongly competitive, and whose shares are under-priced relative to their intrinsic value. To reduce its volatility, the Portfolio is diversified across dimensions of geography, industry, and currency. The Portfolio normally holds 50-200 investments across at least 12 countries.

As used herein, frontier emerging markets include countries that are represented in the MSCI Frontier Markets Index or the S&P Frontier Markets BMI, or similar market indices, and the smaller of the traditionally-recognized emerging markets, such as those individually constituting less than 5% of the MSCI Emerging Markets Index or the S&P Emerging Markets BMI. Factors bearing on whether a company is considered to be “based” in a frontier emerging market may include: (1) it is legally domiciled in a frontier emerging market; (2) it conducts at least 50% of its business, as measured by the location of its sales, earnings, assets, or production, in frontier emerging markets; or (3) it has the principal exchange listing for its securities in a frontier emerging market. Frontier emerging markets generally include all countries except the developed markets of Australia, Austria, Belgium, Canada, Denmark, Finland, France, Germany, Greece, Hong Kong, Ireland, Israel, Italy, Japan, the Netherlands, New Zealand, Norway, Portugal, Singapore, Spain, Sweden, Switzerland, the United Kingdom and the United States and the larger traditionally-recognized emerging markets of Taiwan, Korea, Mexico, South Africa, Brazil, India, China and Russia. At least 65% of the Portfolio’s total assets will be denominated in at least three currencies other than the U.S. Dollar. For purposes of compliance with this restriction, American Depositary Receipts, Global Depositary Receipts and European Depositary Receipts (collectively, “Depositary Receipts”) will be considered to be denominated in the currency of the country where the securities underlying the Depositary Receipts are traded.

The Portfolio invests at least 65% of its total assets in common stocks, preferred stocks, rights and warrants issued by companies that are based in the frontier emerging markets, securities convertible into such securities (including Depositary Receipts), and investment companies that invest in the types of securities in which the Portfolio would normally invest. The Portfolio also may invest in securities of U.S. companies that derive, or are expected to derive, a significant portion of their revenues from their foreign operations, although under normal circumstances, not more than 15% of the Portfolio’s total assets will be invested in securities of U.S. companies. The Portfolio may also invest in short-term or other debt securities. The Portfolio may invest up to 35% of its total assets in debt securities of domestic and foreign issuers, including such instruments as corporate bonds, debentures, notes, commercial paper, short-term notes, medium-term notes and variable rate notes.

The Portfolio invests at least 80% of its net assets (plus any borrowings for investment purposes) in frontier emerging market securities. This strategy is not fundamental, but should the Portfolio decide to change this strategy, it will provide shareholders with at least 60 days’ prior written notice.

The Portfolio also may invest in derivatives, including forward foreign currency exchange contracts and equity derivative securities such as participation notes; options on common stocks; and options, futures and options on futures on foreign common stock indices. Because some emerging market countries do not permit foreigners to participate directly in their securities markets or otherwise present difficulties for efficient foreign investment, the Portfolio may use equity derivative securities, and, in particular, participation notes, to gain exposure to those countries.

Principal Risks

The Portfolio is subject to numerous risks, any of which could cause an investor to lose money. The principal risks of the Portfolio are as follows:

• Market Risk:  Investments in the Portfolio may lose value due to a general downturn in stock markets.

• Currency Risk:  Foreign currencies may experience steady or sudden devaluation relative to the U.S. dollar, adversely affecting the value of the Portfolio’s investments. Because the Portfolio’s net asset value is determined on the basis of U.S. dollars, if the local currency of a foreign market depreciates against the U.S. dollar, you may lose money even if the foreign market prices of the Portfolio’s holdings rise.

• Foreign Investment Risk:  Securities issued by foreign entities involve risks not associated with U.S. investments. These risks include additional taxation, political, economic, social or diplomatic instability, and the above-mentioned possibility of changes in the foreign currency exchange rates. There may also be less publicly-available information about a foreign issuer. Such risks may be magnified with respect to securities of issuers in frontier emerging markets.

• Frontier Emerging Market Risk:  Frontier emerging market securities involve unique risks, such as exposure to economies less diverse and mature than that of the U.S. or more established foreign markets. Economic or political instability may cause larger price changes in frontier emerging market securities than in securities of issuers based in more developed foreign countries, including securities of issuers based in larger emerging markets. Frontier emerging markets generally receive less investor attention than developed markets and larger emerging markets.

• Debt Securities Risk:  Debt securities may lose value due to unfavorable fluctuations in the level of interest rates or due to a decline in the creditworthiness of the issuer. As interest rates rise, the value of debt securities declines. This risk is generally greater for debt securities with longer maturities than for debt securities with shorter maturities.

• Participation Notes Risk:  Participation notes are designed to replicate the return of a particular underlying equity or debt security, currency or market. Participation notes involve the same risks associated with a direct investment in the underlying security, currency or market. In addition, participation notes involve counterparty risk, because the Portfolio has no rights under participation notes against the issuer(s) of the underlying security(ies) and must rely on the creditworthiness of the issuer of the participation note.

• Concentration Risk:  The Portfolio may invest up to 35% of its total assets in securities of companies in any one industry if, at the time of investment, that industry represents 20% or more of the Portfolio’s benchmark index, currently the MSCI Frontier Emerging Markets Index. Accordingly, at any time the Portfolio has such a concentration of investments in a single industry group, it will be particularly vulnerable to factors that adversely affect that industry group.

Portfolio Performance

The bar chart below shows how the Portfolio’s investment results have varied from year to year. The table that follows shows how the Portfolio’s Institutional Class average annual total returns compare with a broad measure of market performance. Together, these provide an indication of the risks of investing in the Portfolio. How the Institutional Class of the Portfolio has performed in the past (before and after taxes) is not necessarily an indication of how it will perform in the future.

Updated Portfolio performance information is available at www.hardingloevnerfunds.com or by calling (877) 435-8105.

Frontier Emerging Markets Portfolio

The best calendar quarter return during the period shown above was 37.37% in the 2nd quarter of 2009; the worst was -15.65% in the 3rd quarter of 2011.

Average Annual Total Returns
(for the periods ended December 31, 2012)

Average Annual Total Returns Institutional Harding Loevner Frontier Emerging Markets Portfolio		1-Year	Since Inception	Inception Date
Institutional Class		19.88%	(5.89%)	May 27, 2008
Institutional Class Return After Taxes on Distributions	[1]	19.68%	(5.98%)	May 27, 2008
Institutional Class Return After Taxes on Distributions and Sale of Portfolio Shares	[1]	13.20%	(4.91%)	May 27, 2008
MSCI Frontier Emerging Markets (net) Index (reflects no deduction for fees, expenses, or taxes)		20.87%	(6.64%)	May 27, 2008

[1] Harding Loevner LP has contractually agreed to waive a portion of its management fee and/or reimburse the Portfolio for its other operating expenses to the extent Total Annual Portfolio Operating Expenses, as a percentage of average daily net assets, exceed 2.00% through February 28, 2014.

[1] After-tax returns in the table above are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. In some cases, the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Portfolio shares at the end of the measurement period. Actual after-tax returns depend on an investor's tax situation and may differ from those shown, and after-tax returns shown are not relevant to investors who hold their Portfolio shares through tax-deferred arrangements, such as 401(k) plans or Individual Retirement Accounts.

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	HARDING LOEVNER FUNDS INC
Prospectus Date	rr_ProspectusDate	Feb. 28, 2013
Institutional | Harding Loevner Global Equity Portfolio
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	PORTFOLIO SUMMARIES Global Equity Portfolio
Objective [Heading]	rr_ObjectiveHeading	Investment Objective
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	The Global Equity Portfolio (the “Portfolio”) seeks long-term capital appreciation through investments in equity securities of companies based both inside and outside the United States.
Expense [Heading]	rr_ExpenseHeading	Portfolio Fees and Expenses
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	This table describes the fees and expenses that you may pay if you buy and hold shares of the Institutional Class of the Portfolio. There is no sales charge imposed on purchases of shares.
Shareholder Fees Caption [Text]	rr_ShareholderFeesCaption	Shareholder Fees (fees paid directly from your investment)
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	Annual Portfolio Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Fee Waiver or Reimbursement over Assets, Date of Termination	rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination	February 28, 2014
Portfolio Turnover [Heading]	rr_PortfolioTurnoverHeading	Portfolio Turnover
Portfolio Turnover [Text Block]	rr_PortfolioTurnoverTextBlock	The Portfolio pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Portfolio shares are held in a taxable account. These costs, which are not reflected in annual portfolio operating expenses or in the Example, affect the Portfolio’s performance. During the most recent fiscal year, the Portfolio’s portfolio turnover rate was 32% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	32.00%
Expenses Restated to Reflect Current [Text]	rr_ExpensesRestatedToReflectCurrent	Expense information in this table has been restated to reflect current fees.
Expense Example [Heading]	rr_ExpenseExampleHeading	■    Example:
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	This example is intended to help you compare the cost of investing in the Institutional Class of the Portfolio with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Institutional Class of the Portfolio for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Institutional Class’s operating expenses remain the same, except that the example assumes that the fee waiver and expense reimbursement agreement pertains only through February 28, 2014. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Strategy [Heading]	rr_StrategyHeading	Principal Investment Strategies
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	The Portfolio invests in companies based in the U.S. and other developed markets, as well as in emerging and frontier markets. Harding Loevner LP (“Harding Loevner”), the Portfolio’s investment adviser, undertakes fundamental research in an effort to identify companies that are well managed, financially sound, fast growing and strongly competitive, and whose shares are under-priced relative to their intrinsic value. To reduce its volatility, the Portfolio is diversified across dimensions of geography, industry, currency and market capitalization. The Portfolio normally holds 35-75 investments across at least 15 countries. The Portfolio will normally invest broadly in equity securities of companies domiciled in the following countries and regions: (1) Europe; (2) the Pacific Rim; (3) the United States, Canada and Mexico; and (4) countries with emerging or frontier markets. At least 65% of total assets will be denominated in at least three currencies, which may include the U.S. dollar. For purposes of compliance with this restriction, American Depositary Receipts, Global Depositary Receipts, and European Depositary Receipts (collectively, “Depositary Receipts”), will be considered to be denominated in the currency of the country where the securities underlying the Depositary Receipts are traded. The Portfolio invests at least 80% of its net assets (plus any borrowings for investment purposes) in common stocks, preferred stocks, rights and warrants issued by companies that are based both inside and outside the United States, securities convertible into such securities (including Depositary Receipts), and investment companies that invest in the types of securities in which the Portfolio would normally invest. This strategy is not fundamental, but should the Portfolio decide to change this strategy, it will provide shareholders with at least 60 days’ prior written notice.
Risk [Heading]	rr_RiskHeading	Principal Risks
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	The Portfolio is subject to numerous risks, any of which could cause an investor to lose money. The principal risks of the Portfolio are as follows: Market Risk:  Investments in the Portfolio may lose value due to a general downturn in stock markets. Currency Risk:  Foreign currencies may experience steady or sudden devaluation relative to the U.S. dollar, adversely affecting the value of the Portfolio’s investments. Because the Portfolio’s net asset value is determined on the basis of U.S. dollars, if the local currency of a foreign market depreciates against the U.S. dollar, you may lose money even if the foreign market prices of the Portfolio’s holdings rise. Foreign Investment Risk:  Securities issued by foreign entities involve risks not associated with U.S. investments. These risks include additional taxation, political, economic, social or diplomatic instability, and the above-mentioned possibility of changes in foreign currency exchange rates. There may also be less publicly-available information about a foreign issuer. Emerging and Frontier Market Risk:  Emerging and frontier market securities involve unique risks, such as exposure to economies less diverse and mature than that of the U.S. or more established foreign markets. Economic or political instability may cause larger price changes in emerging or frontier market securities than in securities of issuers based in more developed foreign countries. Small- and Mid-Capitalization Risk:  The securities of smaller and medium-sized companies have historically exhibited more volatility with a lower degree of liquidity than larger companies.
Risk Lose Money [Text]	rr_RiskLoseMoney	The Portfolio is subject to numerous risks, any of which could cause an investor to lose money.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	Portfolio Performance
Performance Narrative [Text Block]	rr_PerformanceNarrativeTextBlock	The bar chart below shows how the Portfolio’s investment results have varied from year to year. The table that follows shows how the Portfolio’s Institutional Class average annual total returns compare with a broad measure of market performance. Together, these provide an indication of the risks of investing in the Portfolio. How the Institutional Class of the Portfolio has performed in the past (before and after taxes) is not necessarily an indication of how it will perform in the future. Updated Portfolio performance information is available at www.hardingloevnerfunds.com or by calling (877) 435-8105.
Performance Information Illustrates Variability of Returns [Text]	rr_PerformanceInformationIllustratesVariabilityOfReturns	The bar chart below shows how the Portfolio’s investment results have varied from year to year. The table that follows shows how the Portfolio’s Institutional Class average annual total returns compare with a broad measure of market performance.
Performance Availability Phone [Text]	rr_PerformanceAvailabilityPhone	(877) 435-8105
Performance Availability Website Address [Text]	rr_PerformanceAvailabilityWebSiteAddress	www.hardingloevnerfunds.com
Performance Past Does Not Indicate Future [Text]	rr_PerformancePastDoesNotIndicateFuture	How the Institutional Class of the Portfolio has performed in the past (before and after taxes) is not necessarily an indication of how it will perform in the future.
Bar Chart [Heading]	rr_BarChartHeading	Global Equity Portfolio
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	The best calendar quarter return during the period shown above was 15.90% in the 1st quarter of 2012; the worst was -16.23% in the 3rd quarter of 2011.
Performance Table Heading	rr_PerformanceTableHeading	Average Annual Total Returns (for the periods ended December 31, 2012)
Performance Table Uses Highest Federal Rate	rr_PerformanceTableUsesHighestFederalRate	After-tax returns in the table above are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred	rr_PerformanceTableNotRelevantToTaxDeferred	Actual after-tax returns depend on an investor’s tax situation and may differ from those shown, and after-tax returns shown are not relevant to investors who hold their Portfolio shares through tax-deferred arrangements, such as 401(k) plans or Individual Retirement Accounts.
Performance Table Explanation after Tax Higher	rr_PerformanceTableExplanationAfterTaxHigher	In some cases, the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Portfolio shares at the end of the measurement period.
Institutional | Harding Loevner Global Equity Portfolio | Institutional Class
Risk/Return:	rr_RiskReturnAbstract
Redemption Fee (as a percentage of amount redeemed within 90 days or less from the date of purchase)	rr_RedemptionFeeOverRedemption	2.00%
Management Fees	rr_ManagementFeesOverAssets	0.85%	[1]
Distribution (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none	[1]
Other Expenses	rr_OtherExpensesOverAssets	0.17%	[1]
Total Annual Portfolio Operating Expenses	rr_ExpensesOverAssets	1.02%	[1]
Fee Waiver and/or Expense Reimbursement	rr_FeeWaiverOrReimbursementOverAssets	(0.07%)	[1],[2]
Total Annual Portfolio Operating Expenses After Fee Waiver and/or Expense Reimbursement	rr_NetExpensesOverAssets	0.95%	[1],[2]
1 Year	rr_ExpenseExampleYear01	97
3 Years	rr_ExpenseExampleYear03	318
5 Years	rr_ExpenseExampleYear05	556
10 Years	rr_ExpenseExampleYear10	1,241
2010	rr_AnnualReturn2010	15.55%
2011	rr_AnnualReturn2011	(8.22%)
2012	rr_AnnualReturn2012	17.42%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	best calendar quarter return
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Mar. 31, 2012
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	15.90%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	the worst
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Sep. 30, 2011
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(16.23%)
1-Year	rr_AverageAnnualReturnYear01	17.42%
Since Inception	rr_AverageAnnualReturnSinceInception	8.81%
Inception Date	rr_AverageAnnualReturnInceptionDate	Nov. 03, 2009
Institutional | Harding Loevner Global Equity Portfolio | Return After Taxes on Distributions | Institutional Class
Risk/Return:	rr_RiskReturnAbstract
1-Year	rr_AverageAnnualReturnYear01	17.34%	[3]
Since Inception	rr_AverageAnnualReturnSinceInception	8.62%	[3]
Inception Date	rr_AverageAnnualReturnInceptionDate	Nov. 03, 2009	[3]
Institutional | Harding Loevner Global Equity Portfolio | Return After Taxes on Distributions and Sale of Portfolio Shares | Institutional Class
Risk/Return:	rr_RiskReturnAbstract
1-Year	rr_AverageAnnualReturnYear01	11.43%	[3]
Since Inception	rr_AverageAnnualReturnSinceInception	7.53%	[3]
Inception Date	rr_AverageAnnualReturnInceptionDate	Nov. 03, 2009	[3]
Institutional | Harding Loevner Global Equity Portfolio | MSCI All Country World (net) Index (reflects no deduction for fees, expenses, or taxes)
Risk/Return:	rr_RiskReturnAbstract
1-Year	rr_AverageAnnualReturnYear01	16.13%
Since Inception	rr_AverageAnnualReturnSinceInception	8.28%
Inception Date	rr_AverageAnnualReturnInceptionDate	Nov. 03, 2009

[1] Expense information in this table has been restated to reflect current fees. Therefore, the expenses in this table will not correlate to the expenses shown in the Financial Highlights of the Portfolio.

[2] Harding Loevner LP has contractually agreed to waive a portion of its management fee and/or reimburse the Portfolio for its other operating expenses to the extent Total Annual Portfolio Operating Expenses, as a percentage of average daily net assets, exceed 0.95% through February 28, 2014.

[3] After-tax returns in the table above are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. In some cases, the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Portfolio shares at the end of the measurement period. Actual after-tax returns depend on an investor's tax situation and may differ from those shown, and after-tax returns shown are not relevant to investors who hold their Portfolio shares through tax-deferred arrangements, such as 401(k) plans or Individual Retirement Accounts.

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Investor | Harding Loevner Emerging Markets Portfolio

PORTFOLIO SUMMARY
Emerging Markets Portfolio

The Investor Class of the Emerging Markets Portfolio is not currently available.

Investment Objective

The Emerging Markets Portfolio (the “Portfolio”) seeks long-term capital appreciation through investments in equity securities of companies based in emerging markets.

Portfolio Fees and Expenses

This table describes the fees and expenses that you may pay if you buy and hold shares of the Investor Class of the Portfolio. There is no sales charge imposed on purchases of shares.

Shareholder Fees
(fees paid directly from your investment)

Shareholder Fees	Investor Harding Loevner Emerging Markets Portfolio Investor Class
Redemption Fee (as a percentage of amount redeemed within 90 days or less from the date of purchase)	2.00%

Annual Portfolio Operating Expenses
(expenses that you pay each year as a
percentage of the value of your investment)

Annual Fund Operating Expenses		Investor Harding Loevner Emerging Markets Portfolio Investor Class
Management Fees	[1]	1.14%
Distribution (12b-1) Fees	[1]	0.25%
Other Expenses	[1][2]	0.33%
Total Annual Portfolio Operating Expenses	[1]	1.72%
Fee Waiver and/or Expense Reimbursement	[1][3]	none
Total Annual Portfolio Operating Expenses After Fee Waiver and/or Expense Reimbursement	[1][3]	1.72%

■    Example:

This example is intended to help you compare the cost of investing in the Investor Class of the Portfolio with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Investor Class of the Portfolio for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Investor Class’s operating expenses remain the same except that the example assumes that the fee waiver and expense reimbursement agreement pertains only through February 28, 2014. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example (USD $)	1 Year	3 Years	5 Years	10 Years
Investor Harding Loevner Emerging Markets Portfolio Investor Class	175	542	933	2,030

Portfolio Turnover

The Portfolio pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Portfolio shares are held in a taxable account. These costs, which are not reflected in annual portfolio operating expenses or in the Example, affect the Portfolio’s performance. During the most recent fiscal year, the Portfolio’s portfolio turnover rate was 42% of the average value of its portfolio.

Principal Investment Strategies

The Portfolio invests primarily in companies that are based in emerging and frontier markets. It may also invest in short-term or other debt securities. Emerging and frontier markets offer investment opportunities that arise from long-term trends in demographics, deregulation, offshore outsourcing and improving corporate governance in developing countries. Harding Loevner LP (“Harding Loevner”), the Portfolio’s investment adviser, undertakes fundamental research in an effort to identify companies that are well managed, financially sound, fast growing and strongly competitive, and whose shares are under-priced relative to their intrinsic value. To reduce its volatility, the Portfolio is diversified across dimensions of geography, industry and currency. The Portfolio normally holds 50-80 investments across at least 15 countries. Emerging and frontier markets include countries that have an emerging stock market as defined by Morgan Stanley Capital International, countries or markets with low- to middle-income economies as classified by the World Bank, and other countries or markets with similar characteristics. Emerging and frontier markets tend to have relatively low gross national product per capita compared to the world’s major economies and may have the potential for rapid economic growth.

Factors bearing on whether a company is considered to be “based” in an emerging or frontier market may include: (1) it is legally domiciled in an emerging or frontier market; (2) it conducts at least 50% of its business, as measured by the location of its sales, earnings, assets, or production, in an emerging or frontier market; or (3) it has the principal exchange listing for its securities in an emerging or frontier market.

The Portfolio will invest broadly in equity and debt securities of companies domiciled in one of at least 15 countries with emerging or frontier markets, generally considered to include all countries except Australia, Austria, Belgium, Canada, Denmark, Finland, France, Germany, Greece, Hong Kong, Ireland, Israel, Italy, Japan, the Netherlands, New Zealand, Norway, Portugal, Singapore, Spain, Sweden, Switzerland, the United Kingdom and the United States. At least 65% of the Portfolio’s total assets will be denominated in at least three currencies other than the U.S. Dollar. For purposes of compliance with this restriction, American Depositary Receipts, Global Depositary Receipts and European Depositary Receipts (collectively, “Depositary Receipts”) will be considered to be denominated in the currency of the country where the securities underlying the Depositary Receipts are traded.

The Portfolio invests at least 65% of its total assets in common stocks, preferred stocks, rights and warrants issued by companies that are based in emerging or frontier markets, securities convertible into such securities (including Depositary Receipts), and investment companies that invest in the types of securities in which the Portfolio would normally invest. The Portfolio also may invest in securities of U.S. companies that derive, or are expected to derive, a significant portion of their revenues from their foreign operations, although under normal circumstances, not more than 15% of the Portfolio’s total assets will be invested in securities of U.S. companies. The Portfolio also may invest up to 35% of its total assets in debt securities of domestic and foreign issuers, including such instruments as corporate bonds, debentures, notes, commercial paper, short-term notes, medium-term notes and variable rate notes.

The Portfolio invests at least 80% of its net assets (plus any borrowings for investment purposes) in emerging and frontier markets securities. This strategy is not fundamental, but should the Portfolio decide to change this strategy, it will provide shareholders with at least 60 days’ prior written notice.

The Portfolio also may invest in derivatives, including forward foreign currency exchange contracts and equity derivative securities such as participation notes; options on common stocks; and options, futures and options on futures on foreign common stock indices. Because some emerging market countries do not permit foreigners to participate directly in their securities markets or otherwise present difficulties for efficient foreign investment, the Portfolio may use equity derivative securities, and, in particular, participation notes, to gain exposure to those countries.

Principal Risks

The Portfolio is subject to numerous risks, any of which could cause an investor to lose money. The principal risks of the Portfolio are as follows:

• Market Risk:  Investments in the Portfolio may lose value due to a general downturn in stock markets.

• Currency Risk:  Foreign currencies may experience steady or sudden devaluation relative to the U.S. dollar, adversely affecting the value of the Portfolio’s investments. Because the Portfolio’s net asset value is determined on the basis of U.S. dollars, if the local currency of a foreign market depreciates against the U.S. dollar, you may lose money even if the foreign market prices of the Portfolio’s holdings rise.

• Foreign Investment Risk:  Securities issued by foreign entities involve risks not associated with U.S. investments. These risks include additional taxation, political, economic, social or diplomatic instability, and the above-mentioned possibility of changes in foreign currency exchange rates. There may also be less publicly-available information about a foreign issuer.

• Emerging and Frontier Market Risk:  Emerging and frontier market securities involve unique risks, such as exposure to economies less diverse and mature than that of the U.S. or more established foreign markets. Economic or political instability may cause larger price changes in emerging or frontier market securities than in securities of issuers based in more developed foreign countries.

• Debt Securities Risk:  Debt securities may lose value due to unfavorable fluctuations in the level of interest rates or due to a decline in the creditworthiness of the issuer. As interest rates rise, the value of debt securities declines. This risk is generally greater for debt securities with longer maturities than for debt securities with shorter maturities.

• Participation Notes Risk:  Participation notes are designed to replicate the return of a particular underlying equity or debt security, currency or market. Participation notes involve the same risks associated with a direct investment in the underlying security, currency, or market. In addition, participation notes involve counterparty risk, because the Portfolio has no rights against the issuer(s) of the underlying security(ies) and must rely on the creditworthiness of the issuer of the participation note.

Portfolio Performance

The Investor Class of the Portfolio has not yet been in operation for a calendar year. Accordingly, the performance information shown below is for the Advisor Class of the Portfolio which is not offered in this Prospectus but would have substantially similar annual returns as the Investor Class because both classes of shares are invested in the same portfolio of securities. Annual returns will differ only to the extent that the classes do not have the same expenses. Specifically, the performance shown for the Advisor Class does not reflect the 0.25% distribution fee that is charged to Investor Class shares. Had these been reflected, the performance shown would have been lower.

Updated Portfolio performance information is available at www.hardingloevnerfunds.com or by calling (877) 435-8105.

Emerging Markets Portfolio

The best calendar quarter return during the period shown above was 32.85% in the 2nd quarter of 2009; the worst was -27.99% in the 4th quarter of 2008.

Average Annual Total Returns
(for the periods ended December 31, 2012)

Average Annual Total Returns Investor Harding Loevner Emerging Markets Portfolio		1-Year	5-Year	10-Year
Advisor Class		22.73%	(0.93%)	16.65%
Advisor Class Return After Taxes on Distributions	[1]	21.49%	(1.21%)	16.40%
Advisor Class Return After Taxes on Distributions and Sale of Portfolio Shares	[1]	16.43%	(0.77%)	15.24%
MSCI Emerging Markets (net) Index (reflects no deduction for fees, expenses, or taxes)		18.23%	(0.92%)	16.51%

[1] Expense information in this table has been restated to reflect current fees. Therefore, the expenses in this table will not correlate to the expenses shown in the Financial Highlights of the Portfolio.

[2] Other expenses have been estimated based on actual expenses of the Advisor Class during the fiscal year ended October 31, 2012.

[3] Harding Loevner LP has contractually agreed to waive a portion of its management fee and/or reimburse the Portfolio for its other operating expenses to the extent Total Annual Portfolio Operating Expenses, as a percentage of average daily net assets, exceed 1.75% through February 28, 2014.

[1] After-tax returns in the table above are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. In some cases, the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Portfolio shares at the end of the measurement period. Actual after-tax returns depend on an investor's tax situation and may differ from those shown, and after-tax returns shown are not relevant to investors who hold their Portfolio shares through tax-deferred arrangements, such as 401(k) plans or Individual Retirement Accounts.

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Institutional | Harding Loevner Global Equity Portfolio

PORTFOLIO SUMMARIES
Global Equity Portfolio

Investment Objective

The Global Equity Portfolio (the “Portfolio”) seeks long-term capital appreciation through investments in equity securities of companies based both inside and outside the United States.

Portfolio Fees and Expenses

This table describes the fees and expenses that you may pay if you buy and hold shares of the Institutional Class of the Portfolio. There is no sales charge imposed on purchases of shares.

Shareholder Fees
(fees paid directly from your investment)

Shareholder Fees	Institutional Harding Loevner Global Equity Portfolio Institutional Class
Redemption Fee (as a percentage of amount redeemed within 90 days or less from the date of purchase)	2.00%

Annual Portfolio Operating Expenses
(expenses that you pay each year as a percentage of the
value of your investment)

Annual Fund Operating Expenses		Institutional Harding Loevner Global Equity Portfolio Institutional Class
Management Fees	[1]	0.85%
Distribution (12b-1) Fees	[1]	none
Other Expenses	[1]	0.17%
Total Annual Portfolio Operating Expenses	[1]	1.02%
Fee Waiver and/or Expense Reimbursement	[1][2]	(0.07%)
Total Annual Portfolio Operating Expenses After Fee Waiver and/or Expense Reimbursement	[1][2]	0.95%

■    Example:

This example is intended to help you compare the cost of investing in the Institutional Class of the Portfolio with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Institutional Class of the Portfolio for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Institutional Class’s operating expenses remain the same, except that the example assumes that the fee waiver and expense reimbursement agreement pertains only through February 28, 2014. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example (USD $)	1 Year	3 Years	5 Years	10 Years
Institutional Harding Loevner Global Equity Portfolio Institutional Class	97	318	556	1,241

Portfolio Turnover

The Portfolio pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Portfolio shares are held in a taxable account. These costs, which are not reflected in annual portfolio operating expenses or in the Example, affect the Portfolio’s performance. During the most recent fiscal year, the Portfolio’s portfolio turnover rate was 32% of the average value of its portfolio.

Principal Investment Strategies

The Portfolio invests in companies based in the U.S. and other developed markets, as well as in emerging and frontier markets. Harding Loevner LP (“Harding Loevner”), the Portfolio’s investment adviser, undertakes fundamental research in an effort to identify companies that are well managed, financially sound, fast growing and strongly competitive, and whose shares are under-priced relative to their intrinsic value. To reduce its volatility, the Portfolio is diversified across dimensions of geography, industry, currency and market capitalization. The Portfolio normally holds 35-75 investments across at least 15 countries.

The Portfolio will normally invest broadly in equity securities of companies domiciled in the following countries and regions: (1) Europe; (2) the Pacific Rim; (3) the United States, Canada and Mexico; and (4) countries with emerging or frontier markets. At least 65% of total assets will be denominated in at least three currencies, which may include the U.S. dollar. For purposes of compliance with this restriction, American Depositary Receipts, Global Depositary Receipts, and European Depositary Receipts (collectively, “Depositary Receipts”), will be considered to be denominated in the currency of the country where the securities underlying the Depositary Receipts are traded.

The Portfolio invests at least 80% of its net assets (plus any borrowings for investment purposes) in common stocks, preferred stocks, rights and warrants issued by companies that are based both inside and outside the United States, securities convertible into such securities (including Depositary Receipts), and investment companies that invest in the types of securities in which the Portfolio would normally invest. This strategy is not fundamental, but should the Portfolio decide to change this strategy, it will provide shareholders with at least 60 days’ prior written notice.

Principal Risks

The Portfolio is subject to numerous risks, any of which could cause an investor to lose money. The principal risks of the Portfolio are as follows:

• Market Risk:  Investments in the Portfolio may lose value due to a general downturn in stock markets.

• Currency Risk:  Foreign currencies may experience steady or sudden devaluation relative to the U.S. dollar, adversely affecting the value of the Portfolio’s investments. Because the Portfolio’s net asset value is determined on the basis of U.S. dollars, if the local currency of a foreign market depreciates against the U.S. dollar, you may lose money even if the foreign market prices of the Portfolio’s holdings rise.

• Foreign Investment Risk:  Securities issued by foreign entities involve risks not associated with U.S. investments. These risks include additional taxation, political, economic, social or diplomatic instability, and the above-mentioned possibility of changes in foreign currency exchange rates. There may also be less publicly-available information about a foreign issuer.

• Emerging and Frontier Market Risk:  Emerging and frontier market securities involve unique risks, such as exposure to economies less diverse and mature than that of the U.S. or more established foreign markets. Economic or political instability may cause larger price changes in emerging or frontier market securities than in securities of issuers based in more developed foreign countries.

• Small- and Mid-Capitalization Risk:  The securities of smaller and medium-sized companies have historically exhibited more volatility with a lower degree of liquidity than larger companies.

Portfolio Performance

The bar chart below shows how the Portfolio’s investment results have varied from year to year. The table that follows shows how the Portfolio’s Institutional Class average annual total returns compare with a broad measure of market performance. Together, these provide an indication of the risks of investing in the Portfolio. How the Institutional Class of the Portfolio has performed in the past (before and after taxes) is not necessarily an indication of how it will perform in the future.

Updated Portfolio performance information is available at www.hardingloevnerfunds.com or by calling (877) 435-8105.

Global Equity Portfolio

The best calendar quarter return during the period shown above was 15.90% in the 1st quarter of 2012; the worst was -16.23% in the 3rd quarter of 2011.

Average Annual Total Returns
(for the periods ended December 31, 2012)

Average Annual Total Returns Institutional Harding Loevner Global Equity Portfolio		1-Year	Since Inception	Inception Date
Institutional Class		17.42%	8.81%	Nov. 03, 2009
Institutional Class Return After Taxes on Distributions	[1]	17.34%	8.62%	Nov. 03, 2009
Institutional Class Return After Taxes on Distributions and Sale of Portfolio Shares	[1]	11.43%	7.53%	Nov. 03, 2009
MSCI All Country World (net) Index (reflects no deduction for fees, expenses, or taxes)		16.13%	8.28%	Nov. 03, 2009

[1] Expense information in this table has been restated to reflect current fees. Therefore, the expenses in this table will not correlate to the expenses shown in the Financial Highlights of the Portfolio.

[2] Harding Loevner LP has contractually agreed to waive a portion of its management fee and/or reimburse the Portfolio for its other operating expenses to the extent Total Annual Portfolio Operating Expenses, as a percentage of average daily net assets, exceed 0.95% through February 28, 2014.

[1] After-tax returns in the table above are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. In some cases, the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Portfolio shares at the end of the measurement period. Actual after-tax returns depend on an investor's tax situation and may differ from those shown, and after-tax returns shown are not relevant to investors who hold their Portfolio shares through tax-deferred arrangements, such as 401(k) plans or Individual Retirement Accounts.

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Investor | Harding Loevner Frontier Emerging Markets Portfolio

Frontier Emerging Markets Portfolio

Investment Objective

The Frontier Emerging Markets Portfolio (the “Portfolio”) seeks long-term capital appreciation through investments in equity securities of companies based in frontier and smaller emerging markets.

Portfolio Fees and Expenses

This table describes the fees and expenses that you may pay if you buy and hold shares of the Investor Class of the Portfolio. There is no sales charge imposed on purchases of shares.

Shareholder Fees
(fees paid directly from your investment)

Shareholder Fees	Investor Harding Loevner Frontier Emerging Markets Portfolio Investor Class
Redemption Fee (as a percentage of amount redeemed within 90 days or less from the date of purchase)	2.00%

Annual Portfolio Operating Expenses
(expenses that you pay each year as a
percentage of the value of your investment)

Annual Fund Operating Expenses		Investor Harding Loevner Frontier Emerging Markets Portfolio Investor Class
Management Fees		1.50%
Distribution (12b-1) Fees		0.25%
Other Expenses		2.96%
Total Annual Portfolio Operating Expenses		4.71%
Fee Waiver and/or Expense Reimbursement	[1]	(2.46%)
Total Annual Portfolio Operating Expenses After Fee Waiver and/or Expense Reimbursement	[1]	2.25%

■    Example:

This example is intended to help you compare the cost of investing in the Investor Class of the Portfolio with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Investor Class of the Portfolio for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% rate of return each year and that the Investor Class’s operating expenses remain the same, except that the example assumes that the fee waiver and expense reimbursement agreement pertains only through February 28, 2014. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example (USD $)	1 Year	3 Years	5 Years	10 Years
Investor Harding Loevner Frontier Emerging Markets Portfolio Investor Class	228	1,199	2,175	4,641

Portfolio Turnover

The Portfolio pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Portfolio shares are held in a taxable account. These costs, which are not reflected in annual portfolio operating expenses or in the Example, affect the Portfolio’s performance. During the most recent fiscal year, the Portfolio’s portfolio turnover rate was 72% of the average value of its portfolio.

Principal Investment Strategies

The Portfolio invests primarily in companies that are based in frontier emerging markets, including the smaller traditionally-recognized emerging markets. Frontier emerging markets, with the exception of the oil-producing Gulf States and certain of the smaller traditionally-recognized emerging markets, tend to have relatively low gross national product per capita compared to the larger traditionally-recognized emerging markets and the world’s major developed economies. The frontier emerging markets include the least developed markets even by emerging markets standards. Frontier emerging markets offer investment opportunities that arise from long-term trends in demographics, deregulation, offshore outsourcing and improving corporate governance in developing countries. Harding Loevner LP (“Harding Loevner”), the Portfolio’s investment adviser, undertakes fundamental research in an effort to identify companies that are well managed, financially sound, fast growing and strongly competitive, and whose shares are under-priced relative to their intrinsic value. To reduce its volatility, the Portfolio is diversified across dimensions of geography, industry and currency. The Portfolio normally holds 50-200 investments across at least 12 countries.

As used herein, frontier emerging markets include countries that are represented in the MSCI Frontier Markets Index or the S&P Frontier Markets BMI, or similar market indices, and the smaller of the traditionally-recognized emerging markets, such as those individually constituting less than 5% of the MSCI Emerging Markets Index or the S&P Emerging Markets BMI. Factors bearing on whether a company is considered to be “based” in a frontier emerging market may include: (1) it is legally domiciled in a frontier emerging market; (2) it conducts at least 50% of its business, as measured by the location of its sales, earnings, assets, or production, in frontier emerging markets; or (3) it has the principal exchange listing for its securities in a frontier emerging market. Frontier emerging markets generally include all countries except the developed markets of Australia, Austria, Belgium, Canada, Denmark, Finland, France, Germany, Greece, Hong Kong, Ireland, Israel, Italy, Japan, the Netherlands, New Zealand, Norway, Portugal, Singapore, Spain, Sweden, Switzerland, the United Kingdom and the United States and the larger traditionally-recognized emerging markets of Taiwan, Korea, Mexico, South Africa, Brazil, India, China and Russia. At least 65% of the Portfolio’s Net Assets will be denominated in at least three currencies other than the U.S. Dollar. For purposes of compliance with this restriction, American Depositary Receipts, Global Depositary Receipts and European Depositary Receipts (collectively, “Depositary Receipts”) will be considered to be denominated in the currency of the country where the securities underlying the Depositary Receipts are traded.

The Portfolio invests at least 65% of its total assets in common stocks, preferred stocks, rights and warrants issued by companies that are based in the frontier emerging markets, securities convertible into such securities (including Depositary Receipts), and investment companies that invest in the types of securities in which the Portfolio would normally invest. The Portfolio also may invest in securities of U.S. companies that derive, or are expected to derive, a significant portion of their revenues from their foreign operations, although under normal circumstances, not more than 15% of the Portfolio’s total assets will be invested in securities of U.S. companies. The Portfolio may invest in short-term or other debt securities. The Portfolio may invest up to 35% of its total assets in debt securities of domestic and foreign issuers, including such instruments as corporate bonds, debentures, notes, commercial paper, short-term notes, and medium-term notes and variable rate notes.

The Portfolio invests at least 80% of its net assets (plus any borrowings for investment purposes) in frontier emerging market securities. This strategy is not fundamental, but should the Portfolio decide to change this strategy, it will provide shareholders with at least 60 days’ prior written notice.

The Portfolio may also invest in derivatives, including forward foreign currency exchange contracts and equity derivative securities such as participation notes; options on common stocks; and options, futures and options on futures on foreign common stock indices. Because some emerging market countries do not permit foreigners to participate directly in their securities markets or otherwise present difficulties for efficient foreign investment, the Portfolio may use equity derivative securities, and, in particular, participation notes, to gain exposure to those countries.

Principal Risks

The Portfolio is subject to numerous risks, any of which could cause an investor to lose money. The principal risks of the Portfolio are as follows:

• Market Risk:  Investments in the Portfolio may lose value due to a general downturn in stock markets.

• Currency Risk:  Foreign currencies may experience steady or sudden devaluation relative to the U.S. dollar, adversely affecting the value of the Portfolio’s investments. Because the Portfolio’s net asset value is determined on the basis of U.S. dollars, if the local currency of a foreign market depreciates against the U.S. dollar, you may lose money even if the foreign market prices of the Portfolio’s holdings rise.

• Foreign Investment Risk:  Securities issued by foreign entities involve risks not associated with U.S. investments. These risks include additional taxation, political, economic, social or diplomatic instability, and the above-mentioned possibility of changes in the foreign currency exchange rates. There may also be less publicly-available information about a foreign issuer. Such risks may be magnified with respect to securities of issuers in frontier emerging markets.

• Frontier Emerging Market Risk:  Frontier emerging market securities involve unique risks, such as exposure to economies less diverse and mature than that of the U.S. or more established foreign markets. Economic or political instability may cause larger price changes in frontier emerging market securities than in securities of issuers based in more developed foreign countries, including securities of issuers based in larger emerging markets. Frontier emerging markets generally receive less investor attention than developed markets and larger emerging markets.

• Debt Securities Risk:  Debt securities may lose value due to unfavorable fluctuations in the level of interest rates or due to a decline in the creditworthiness of the issuer. As interest rates rise, the value of debt securities declines. This risk is generally greater for debt securities with longer maturities than for debt securities with shorter maturities.

• Participation Notes Risk:  Participation notes are designed to replicate the return of a particular underlying equity or debt security, currency or market. Participation notes involve the same risks associated with a direct investment in the underlying security, currency or market. In addition, participation notes involve counterparty risk, because the Portfolio has no rights under participation notes against the issuer(s) of the underlying security(ies) and must rely on the creditworthiness of the issuer of the participation note.

• Concentration Risk:  The Portfolio may invest up to 35% of its total assets in securities of companies in any one industry if, at the time of investment, that industry represents 20% or more of the Portfolio’s benchmark index, currently the MSCI Frontier Emerging Markets Index. Accordingly, at any time the Portfolio has such a concentration of investments in a single industry group, it will be particularly vulnerable to factors that adversely affect that industry group.

Portfolio Performance

The bar chart below shows how the Portfolio’s investment results have varied from year to year. The table that follows shows how the Portfolio’s Investor Class average annual total returns compare with a broad measure of market performance. Together, these provide an indication of the risks of investing in the Portfolio. How the Investor Class of the Portfolio has performed in the past (before and after taxes) is not necessarily an indication of how it will perform in the future.

Updated Portfolio performance information is available at www.hardingloevnerfunds.com or by calling (877) 435-8105.

Frontier Emerging Markets Portfolio

The best calendar quarter return during the period shown above was 10.42% in the 1st quarter of 2012; the worst was -15.70% in the 3rd quarter of 2011.

Average Annual Total Returns
(for the periods ended December 31, 2012)

Average Annual Total Returns Investor Harding Loevner Frontier Emerging Markets Portfolio		1-Year	Since Inception	Inception Date
Investor Class		19.75%	(2.98%)	Dec. 31, 2010
Investor Class Return After Taxes on Distributions	[1]	19.58%	(3.08%)	Dec. 31, 2010
Investor Class Return After Taxes on Distributions and Sale of Portfolio Shares	[1]	13.08%	(2.53%)	Dec. 31, 2010
MSCI Frontier Emerging Markets (net) Index (reflects no deduction for fees, expenses, or taxes)		20.87%	(0.17%)	Dec. 31, 2010

[1] Harding Loevner LP has contractually agreed to waive a portion of its management fee and/or reimburse the Portfolio for its other operating expenses to the extent Total Annual Portfolio Operating Expenses, as a percentage of average daily net assets, exceed 2.25% through February 28, 2014.

[1] After-tax returns in the table above are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. In some cases, the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Portfolio shares at the end of the measurement period. Actual after-tax returns depend on an investor's tax situation and may differ from those shown, and after-tax returns shown are not relevant to investors who hold their Portfolio shares through tax-deferred arrangements, such as 401(k) plans or Individual Retirement Accounts.

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Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	HARDING LOEVNER FUNDS INC
Prospectus Date	rr_ProspectusDate	Feb. 28, 2013
Institutional | Harding Loevner International Small Companies Portfolio
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	International Small Companies Portfolio
Objective [Heading]	rr_ObjectiveHeading	Investment Objective
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	The International Small Companies Portfolio (the “Portfolio”) seeks long-term capital appreciation through investments in equity securities of small companies based outside the United States.
Expense [Heading]	rr_ExpenseHeading	Portfolio Fees and Expenses
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	This table describes the fees and expenses that you may pay if you buy and hold shares of the Institutional Class of the Portfolio. There is no sales charge imposed on purchases of shares.
Shareholder Fees Caption [Text]	rr_ShareholderFeesCaption	Shareholder Fees (fees paid directly from your investment)
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	Annual Portfolio Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Fee Waiver or Reimbursement over Assets, Date of Termination	rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination	February 28, 2014
Portfolio Turnover [Heading]	rr_PortfolioTurnoverHeading	Portfolio Turnover
Portfolio Turnover [Text Block]	rr_PortfolioTurnoverTextBlock	The Portfolio pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Portfolio shares are held in a taxable account. These costs, which are not reflected in annual portfolio operating expenses or in the Example, affect the Portfolio’s performance. During the most recent fiscal year, the Portfolio’s portfolio turnover rate was 10% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	10.00%
Expenses Restated to Reflect Current [Text]	rr_ExpensesRestatedToReflectCurrent	Expense information in this table has been restated to reflect current fees.
Expense Example [Heading]	rr_ExpenseExampleHeading	■    Example:
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	This example is intended to help you compare the cost of investing in the Institutional Class of the Portfolio with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Institutional Class of the Portfolio for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Institutional Class’s operating expenses remain the same, except that the example assumes the fee waiver and expense reimbursement agreement pertains only through February 28, 2014. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Strategy [Heading]	rr_StrategyHeading	Principal Investment Strategies
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	The Portfolio invests in small companies based outside the U.S., including companies in emerging and frontier as well as in developed markets. Companies considered to be small are those with a market capitalization below US$3 billion. Harding Loevner LP (“Harding Loevner”), the Portfolio’s investment adviser, undertakes fundamental research in an effort to identify companies that are well managed, financially sound, fast growing and strongly competitive and whose shares are under-priced relative to their intrinsic value. To reduce its volatility, the Portfolio is diversified across dimensions of geography, industry and currency. The Portfolio normally holds 50-200 investments across at least 12 countries. Factors bearing on whether a company is considered to be “based” outside the United States may include: (1) it is legally domiciled outside the United States; (2) it conducts at least 50% of its business, as measured by the location of its sales, earnings, assets, or production, outside the United States; or (3) it has the principal exchange listing for its securities outside the United States. The Portfolio will normally invest broadly in equity securities of small companies domiciled in the following countries and regions: (1) Europe; (2) the Pacific Rim; (3) Canada and Mexico; and (4) countries with emerging or frontier markets. At least 65% of total assets will be denominated in at least three currencies other than the U.S. Dollar. For purposes of compliance with this restriction, American Depositary Receipts, Global Depositary Receipts and European Depositary Receipts (collectively, “Depositary Receipts”) will be considered to be denominated in the currency of the country where the securities underlying the Depositary Receipts are traded. The Portfolio invests at least 80% of its net assets (plus any borrowings for investment purposes) in common stocks, preferred stocks, rights and warrants issued by small companies that are based outside the United States, securities convertible into such securities (including Depositary Receipts), and investment companies that invest in the types of securities in which the Portfolio would normally invest. This strategy is not fundamental, but should the Portfolio decide to change this strategy, it will provide shareholders with at least 60 days’ prior written notice. If the Portfolio continues to hold securities of small companies whose market capitalization, subsequent to purchase, grows to exceed US$3 billion, it may continue to treat them as small for the purposes of the 80% requirement. The Portfolio also may invest in securities of small U.S. companies that derive, or are expected to derive, a significant portion of their revenues from their foreign operations, although under normal circumstances not more than 15% of the Portfolio’s total assets will be invested in securities of U.S. companies.
Risk [Heading]	rr_RiskHeading	Principal Risks
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	The Portfolio is subject to numerous risks, any of which could cause an investor to lose money. The principal risks of the Portfolio are as follows: Market Risk:  Investments in the Portfolio may lose value due to a general downturn in stock markets. Currency Risk:  Foreign currencies may experience steady or sudden devaluation relative to the U.S. dollar, adversely affecting the value of the Portfolio’s investments. Because the Portfolio’s net asset value is determined on the basis of U.S. dollars, if the local currency of a foreign market depreciates against the U.S. dollar, you may lose money even if the foreign market prices of the Portfolio’s holdings rise. Foreign Investment Risk:  Securities issued by foreign entities involve risks not associated with U.S. investments. These risks include additional taxation, political, economic, social or diplomatic instability, and the above-mentioned possibility of changes in the foreign currency exchange rates. There may also be less publicly-available information about a foreign issuer. Emerging and Frontier Market Risk:  Emerging and frontier market securities involve unique risks, such as exposure to economies less diverse and mature than that of the U.S. or more established foreign markets. Economic or political instability may cause larger price changes in emerging or frontier market securities than in securities of issuers based in more developed foreign countries. Small Company Risk:  The securities of smaller companies have historically exhibited more volatility with a lower degree of liquidity than large companies.
Risk Lose Money [Text]	rr_RiskLoseMoney	The Portfolio is subject to numerous risks, any of which could cause an investor to lose money.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	Portfolio Performance
Performance Narrative [Text Block]	rr_PerformanceNarrativeTextBlock	The bar chart below shows the Portfolio’s investment results for the calendar year ended 2012. The table that follows shows how the Portfolio’s Institutional Class average annual total returns compare with a broad measure of market performance. Together, these provide an indication of the risks of investing in the Portfolio. How the Institutional Class of the Portfolio has performed in the past (before and after taxes) is not necessarily an indication of how it will perform in the future. Updated Portfolio performance information is available at www.hardingloevnerfunds.com or by calling (877) 435-8105.
Performance Information Illustrates Variability of Returns [Text]	rr_PerformanceInformationIllustratesVariabilityOfReturns	The bar chart below shows the Portfolio’s investment results for the calendar year ended 2012. The table that follows shows how the Portfolio’s Institutional Class average annual total returns compare with a broad measure of market performance.
Performance Availability Phone [Text]	rr_PerformanceAvailabilityPhone	(877) 435-8105
Performance Availability Website Address [Text]	rr_PerformanceAvailabilityWebSiteAddress	www.hardingloevnerfunds.com
Performance Past Does Not Indicate Future [Text]	rr_PerformancePastDoesNotIndicateFuture	How the Institutional Class of the Portfolio has performed in the past (before and after taxes) is not necessarily an indication of how it will perform in the future.
Bar Chart [Heading]	rr_BarChartHeading	International Small Companies Portfolio
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	The best calendar quarter return during the period shown above was 16.56% in the 1st quarter of 2012; the worst was -5.65% in the 2nd quarter of 2012.
Performance Table Heading	rr_PerformanceTableHeading	Average Annual Total Returns (for the periods ended December 31, 2012)
Performance Table Uses Highest Federal Rate	rr_PerformanceTableUsesHighestFederalRate	After-tax returns in the table above are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred	rr_PerformanceTableNotRelevantToTaxDeferred	Actual after-tax returns depend on an investor’s tax situation and may differ from those shown, and after-tax returns shown are not relevant to investors who hold their Portfolio shares through tax-deferred arrangements, such as 401(k) plans or Individual Retirement Accounts.
Performance Table Explanation after Tax Higher	rr_PerformanceTableExplanationAfterTaxHigher	In some cases, the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Portfolio shares at the end of the measurement period.
Institutional | Harding Loevner International Small Companies Portfolio | Institutional Class
Risk/Return:	rr_RiskReturnAbstract
Redemption Fee (as a percentage of amount redeemed within 90 days or less from the date of purchase)	rr_RedemptionFeeOverRedemption	2.00%
Management Fees	rr_ManagementFeesOverAssets	1.25%	[1]
Distribution (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none	[1]
Other Expenses	rr_OtherExpensesOverAssets	0.39%	[1]
Total Annual Portfolio Operating Expenses	rr_ExpensesOverAssets	1.64%	[1]
Fee Waiver and/or Expense Reimbursement	rr_FeeWaiverOrReimbursementOverAssets	(0.34%)	[1],[2]
Total Annual Portfolio Operating Expenses After Fee Waiver and/or Expense Reimbursement	rr_NetExpensesOverAssets	1.30%	[1],[2]
1 Year	rr_ExpenseExampleYear01	132
3 Years	rr_ExpenseExampleYear03	484
5 Years	rr_ExpenseExampleYear05	860
10 Years	rr_ExpenseExampleYear10	1,915
2012	rr_AnnualReturn2012	24.30%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	best calendar quarter return
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Mar. 31, 2012
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	16.56%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	the worst
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Jun. 30, 2012
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(5.65%)
1-Year	rr_AverageAnnualReturnYear01	24.30%
Since Inception	rr_AverageAnnualReturnSinceInception	(0.47%)
Inception Date	rr_AverageAnnualReturnInceptionDate	Jun. 30, 2011
Institutional | Harding Loevner International Small Companies Portfolio | Return After Taxes on Distributions | Institutional Class
Risk/Return:	rr_RiskReturnAbstract
1-Year	rr_AverageAnnualReturnYear01	24.08%	[3]
Since Inception	rr_AverageAnnualReturnSinceInception	(0.68%)	[3]
Inception Date	rr_AverageAnnualReturnInceptionDate	Jun. 30, 2011	[3]
Institutional | Harding Loevner International Small Companies Portfolio | Return After Taxes on Distributions and Sale of Portfolio Shares | Institutional Class
Risk/Return:	rr_RiskReturnAbstract
1-Year	rr_AverageAnnualReturnYear01	16.08%	[3]
Since Inception	rr_AverageAnnualReturnSinceInception	(0.42%)	[3]
Inception Date	rr_AverageAnnualReturnInceptionDate	Jun. 30, 2011	[3]
Institutional | Harding Loevner International Small Companies Portfolio | MSCI All Country World ex-U.S. Small Cap (net) Index (reflects no deduction for fees, expenses, or taxes)
Risk/Return:	rr_RiskReturnAbstract
1-Year	rr_AverageAnnualReturnYear01	18.50%
Since Inception	rr_AverageAnnualReturnSinceInception	(3.25%)
Inception Date	rr_AverageAnnualReturnInceptionDate	Jun. 30, 2011

[1] Expense information in this table has been restated to reflect current fees. Therefore, the expenses in this table will not correlate to the expenses shown in the Financial Highlights of the Portfolio.

[2] Harding Loevner LP has contractually agreed to waive a portion of its management fee and/or reimburse the Portfolio for its other operating expenses to the extent Total Annual Portfolio Operating Expenses, as a percentage of average daily net assets, exceed 1.30% through February 28, 2014.

[3] After-tax returns in the table above are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. In some cases, the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Portfolio shares at the end of the measurement period. Actual after-tax returns depend on an investor's tax situation and may differ from those shown, and after-tax returns shown are not relevant to investors who hold their Portfolio shares through tax-deferred arrangements, such as 401(k) plans or Individual Retirement Accounts.

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	HARDING LOEVNER FUNDS INC
Prospectus Date	rr_ProspectusDate	Feb. 28, 2013
Institutional | Harding Loevner Frontier Emerging Markets Portfolio
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	Frontier Emerging Markets Portfolio
Objective [Heading]	rr_ObjectiveHeading	Investment Objective
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	The Frontier Emerging Markets Portfolio (the “Portfolio”) seeks long-term capital appreciation through investments in equity securities of companies based in frontier and smaller emerging markets.
Expense [Heading]	rr_ExpenseHeading	Portfolio Fees and Expenses
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	This table describes the fees and expenses that you may pay if you buy and hold shares of the Institutional Class of the Portfolio. There is no sales charge imposed on purchases of shares.
Shareholder Fees Caption [Text]	rr_ShareholderFeesCaption	Shareholder Fees (fees paid directly from your investment)
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	Annual Portfolio Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Fee Waiver or Reimbursement over Assets, Date of Termination	rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination	February 28, 2014
Portfolio Turnover [Heading]	rr_PortfolioTurnoverHeading	Portfolio Turnover
Portfolio Turnover [Text Block]	rr_PortfolioTurnoverTextBlock	The Portfolio pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Portfolio shares are held in a taxable account. These costs, which are not reflected in annual portfolio operating expenses or in the Example, affect the Portfolio’s performance. During the most recent fiscal year, the Portfolio’s portfolio turnover rate was 72% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	72.00%
Expense Example [Heading]	rr_ExpenseExampleHeading	■    Example:
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	This example is intended to help you compare the cost of investing in the Institutional Class of the Portfolio with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Institutional Class of the Portfolio for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Institutional Class’s operating expenses remain the same, except that the example assumes that the fee waiver and expense reimbursement agreement pertains only through February 28, 2014. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Strategy [Heading]	rr_StrategyHeading	Principal Investment Strategies
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	The Portfolio invests primarily in companies that are based in frontier emerging markets, including the smaller traditionally-recognized emerging markets. Frontier emerging markets, with the exception of the oil-producing Gulf States and certain of the smaller traditionally-recognized emerging markets, tend to have relatively low gross national product per capita compared to the larger traditionally-recognized emerging markets and the world’s major developed economies. The frontier emerging markets include the least developed markets even by emerging markets standards. Frontier emerging markets offer investment opportunities that arise from long-term trends in demographics, deregulation, offshore outsourcing and improving corporate governance in developing countries. Harding Loevner LP (“Harding Loevner”), the Portfolio’s investment adviser, undertakes fundamental research in an effort to identify companies that are well managed, financially sound, fast growing and strongly competitive, and whose shares are under-priced relative to their intrinsic value. To reduce its volatility, the Portfolio is diversified across dimensions of geography, industry, and currency. The Portfolio normally holds 50-200 investments across at least 12 countries. As used herein, frontier emerging markets include countries that are represented in the MSCI Frontier Markets Index or the S&P Frontier Markets BMI, or similar market indices, and the smaller of the traditionally-recognized emerging markets, such as those individually constituting less than 5% of the MSCI Emerging Markets Index or the S&P Emerging Markets BMI. Factors bearing on whether a company is considered to be “based” in a frontier emerging market may include: (1) it is legally domiciled in a frontier emerging market; (2) it conducts at least 50% of its business, as measured by the location of its sales, earnings, assets, or production, in frontier emerging markets; or (3) it has the principal exchange listing for its securities in a frontier emerging market. Frontier emerging markets generally include all countries except the developed markets of Australia, Austria, Belgium, Canada, Denmark, Finland, France, Germany, Greece, Hong Kong, Ireland, Israel, Italy, Japan, the Netherlands, New Zealand, Norway, Portugal, Singapore, Spain, Sweden, Switzerland, the United Kingdom and the United States and the larger traditionally-recognized emerging markets of Taiwan, Korea, Mexico, South Africa, Brazil, India, China and Russia. At least 65% of the Portfolio’s total assets will be denominated in at least three currencies other than the U.S. Dollar. For purposes of compliance with this restriction, American Depositary Receipts, Global Depositary Receipts and European Depositary Receipts (collectively, “Depositary Receipts”) will be considered to be denominated in the currency of the country where the securities underlying the Depositary Receipts are traded. The Portfolio invests at least 65% of its total assets in common stocks, preferred stocks, rights and warrants issued by companies that are based in the frontier emerging markets, securities convertible into such securities (including Depositary Receipts), and investment companies that invest in the types of securities in which the Portfolio would normally invest. The Portfolio also may invest in securities of U.S. companies that derive, or are expected to derive, a significant portion of their revenues from their foreign operations, although under normal circumstances, not more than 15% of the Portfolio’s total assets will be invested in securities of U.S. companies. The Portfolio may also invest in short-term or other debt securities. The Portfolio may invest up to 35% of its total assets in debt securities of domestic and foreign issuers, including such instruments as corporate bonds, debentures, notes, commercial paper, short-term notes, medium-term notes and variable rate notes. The Portfolio invests at least 80% of its net assets (plus any borrowings for investment purposes) in frontier emerging market securities. This strategy is not fundamental, but should the Portfolio decide to change this strategy, it will provide shareholders with at least 60 days’ prior written notice. The Portfolio also may invest in derivatives, including forward foreign currency exchange contracts and equity derivative securities such as participation notes; options on common stocks; and options, futures and options on futures on foreign common stock indices. Because some emerging market countries do not permit foreigners to participate directly in their securities markets or otherwise present difficulties for efficient foreign investment, the Portfolio may use equity derivative securities, and, in particular, participation notes, to gain exposure to those countries.
Risk [Heading]	rr_RiskHeading	Principal Risks
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	The Portfolio is subject to numerous risks, any of which could cause an investor to lose money. The principal risks of the Portfolio are as follows: Market Risk:  Investments in the Portfolio may lose value due to a general downturn in stock markets. Currency Risk:  Foreign currencies may experience steady or sudden devaluation relative to the U.S. dollar, adversely affecting the value of the Portfolio’s investments. Because the Portfolio’s net asset value is determined on the basis of U.S. dollars, if the local currency of a foreign market depreciates against the U.S. dollar, you may lose money even if the foreign market prices of the Portfolio’s holdings rise. Foreign Investment Risk:  Securities issued by foreign entities involve risks not associated with U.S. investments. These risks include additional taxation, political, economic, social or diplomatic instability, and the above-mentioned possibility of changes in the foreign currency exchange rates. There may also be less publicly-available information about a foreign issuer. Such risks may be magnified with respect to securities of issuers in frontier emerging markets. Frontier Emerging Market Risk:  Frontier emerging market securities involve unique risks, such as exposure to economies less diverse and mature than that of the U.S. or more established foreign markets. Economic or political instability may cause larger price changes in frontier emerging market securities than in securities of issuers based in more developed foreign countries, including securities of issuers based in larger emerging markets. Frontier emerging markets generally receive less investor attention than developed markets and larger emerging markets. Debt Securities Risk:  Debt securities may lose value due to unfavorable fluctuations in the level of interest rates or due to a decline in the creditworthiness of the issuer. As interest rates rise, the value of debt securities declines. This risk is generally greater for debt securities with longer maturities than for debt securities with shorter maturities. Participation Notes Risk:  Participation notes are designed to replicate the return of a particular underlying equity or debt security, currency or market. Participation notes involve the same risks associated with a direct investment in the underlying security, currency or market. In addition, participation notes involve counterparty risk, because the Portfolio has no rights under participation notes against the issuer(s) of the underlying security(ies) and must rely on the creditworthiness of the issuer of the participation note. Concentration Risk:  The Portfolio may invest up to 35% of its total assets in securities of companies in any one industry if, at the time of investment, that industry represents 20% or more of the Portfolio’s benchmark index, currently the MSCI Frontier Emerging Markets Index. Accordingly, at any time the Portfolio has such a concentration of investments in a single industry group, it will be particularly vulnerable to factors that adversely affect that industry group.
Risk Lose Money [Text]	rr_RiskLoseMoney	The Portfolio is subject to numerous risks, any of which could cause an investor to lose money.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	Portfolio Performance
Performance Narrative [Text Block]	rr_PerformanceNarrativeTextBlock	The bar chart below shows how the Portfolio’s investment results have varied from year to year. The table that follows shows how the Portfolio’s Institutional Class average annual total returns compare with a broad measure of market performance. Together, these provide an indication of the risks of investing in the Portfolio. How the Institutional Class of the Portfolio has performed in the past (before and after taxes) is not necessarily an indication of how it will perform in the future. Updated Portfolio performance information is available at www.hardingloevnerfunds.com or by calling (877) 435-8105.
Performance Information Illustrates Variability of Returns [Text]	rr_PerformanceInformationIllustratesVariabilityOfReturns	The bar chart below shows how the Portfolio’s investment results have varied from year to year. The table that follows shows how the Portfolio’s Institutional Class average annual total returns compare with a broad measure of market performance.
Performance Availability Phone [Text]	rr_PerformanceAvailabilityPhone	(877) 435-8105
Performance Availability Website Address [Text]	rr_PerformanceAvailabilityWebSiteAddress	www.hardingloevnerfunds.com
Performance Past Does Not Indicate Future [Text]	rr_PerformancePastDoesNotIndicateFuture	How the Institutional Class of the Portfolio has performed in the past (before and after taxes) is not necessarily an indication of how it will perform in the future.
Bar Chart [Heading]	rr_BarChartHeading	Frontier Emerging Markets Portfolio
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	The best calendar quarter return during the period shown above was 37.37% in the 2nd quarter of 2009; the worst was -15.65% in the 3rd quarter of 2011.
Performance Table Heading	rr_PerformanceTableHeading	Average Annual Total Returns (for the periods ended December 31, 2012)
Performance Table Uses Highest Federal Rate	rr_PerformanceTableUsesHighestFederalRate	After-tax returns in the table above are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred	rr_PerformanceTableNotRelevantToTaxDeferred	Actual after-tax returns depend on an investor's tax situation and may differ from those shown, and after-tax returns shown are not relevant to investors who hold their Portfolio shares through tax-deferred arrangements, such as 401(k) plans or Individual Retirement Accounts.
Performance Table Explanation after Tax Higher	rr_PerformanceTableExplanationAfterTaxHigher	In some cases, the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Portfolio shares at the end of the measurement period.
Institutional | Harding Loevner Frontier Emerging Markets Portfolio | Institutional Class
Risk/Return:	rr_RiskReturnAbstract
Redemption Fee (as a percentage of amount redeemed within 90 days or less from the date of purchase)	rr_RedemptionFeeOverRedemption	2.00%
Management Fees	rr_ManagementFeesOverAssets	1.50%
Distribution (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Other Expenses	rr_OtherExpensesOverAssets	0.45%
Total Annual Portfolio Operating Expenses	rr_ExpensesOverAssets	1.95%
Fee Waiver and/or Expense Reimbursement	rr_FeeWaiverOrReimbursementOverAssets	none	[1]
Total Annual Portfolio Operating Expenses After Fee Waiver and/or Expense Reimbursement	rr_NetExpensesOverAssets	1.95%	[1]
1 Year	rr_ExpenseExampleYear01	198
3 Years	rr_ExpenseExampleYear03	612
5 Years	rr_ExpenseExampleYear05	1,052
10 Years	rr_ExpenseExampleYear10	2,275
2009	rr_AnnualReturn2009	38.97%
2010	rr_AnnualReturn2010	24.84%
2011	rr_AnnualReturn2011	(21.03%)
2012	rr_AnnualReturn2012	19.88%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	best calendar quarter return
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Jun. 30, 2009
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	37.37%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	the worst
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Sep. 30, 2011
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(15.65%)
1-Year	rr_AverageAnnualReturnYear01	19.88%
Since Inception	rr_AverageAnnualReturnSinceInception	(5.89%)
Inception Date	rr_AverageAnnualReturnInceptionDate	May 27, 2008
Institutional | Harding Loevner Frontier Emerging Markets Portfolio | Return After Taxes on Distributions | Institutional Class
Risk/Return:	rr_RiskReturnAbstract
1-Year	rr_AverageAnnualReturnYear01	19.68%	[2]
Since Inception	rr_AverageAnnualReturnSinceInception	(5.98%)	[2]
Inception Date	rr_AverageAnnualReturnInceptionDate	May 27, 2008	[2]
Institutional | Harding Loevner Frontier Emerging Markets Portfolio | Return After Taxes on Distributions and Sale of Portfolio Shares | Institutional Class
Risk/Return:	rr_RiskReturnAbstract
1-Year	rr_AverageAnnualReturnYear01	13.20%	[2]
Since Inception	rr_AverageAnnualReturnSinceInception	(4.91%)	[2]
Inception Date	rr_AverageAnnualReturnInceptionDate	May 27, 2008	[2]
Institutional | Harding Loevner Frontier Emerging Markets Portfolio | MSCI Frontier Emerging Markets (net) Index (reflects no deduction for fees, expenses, or taxes)
Risk/Return:	rr_RiskReturnAbstract
1-Year	rr_AverageAnnualReturnYear01	20.87%
Since Inception	rr_AverageAnnualReturnSinceInception	(6.64%)
Inception Date	rr_AverageAnnualReturnInceptionDate	May 27, 2008

[1] Harding Loevner LP has contractually agreed to waive a portion of its management fee and/or reimburse the Portfolio for its other operating expenses to the extent Total Annual Portfolio Operating Expenses, as a percentage of average daily net assets, exceed 2.00% through February 28, 2014.

[2] After-tax returns in the table above are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. In some cases, the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Portfolio shares at the end of the measurement period. Actual after-tax returns depend on an investor's tax situation and may differ from those shown, and after-tax returns shown are not relevant to investors who hold their Portfolio shares through tax-deferred arrangements, such as 401(k) plans or Individual Retirement Accounts.

XML

Document and Entity Information	12 Months Ended
	Feb. 28, 2013
Risk/Return:
Document Type	485BPOS
Document Period End Date	Oct. 31, 2012
Registrant Name	HARDING LOEVNER FUNDS INC
Central Index Key	0001018170
Amendment Flag	false
Document Creation Date	Feb. 28, 2013
Document Effective Date	Feb. 28, 2013
Prospectus Date	Feb. 28, 2013

XML

Institutional | Harding Loevner Institutional Emerging Markets Portfolio

Institutional Emerging Markets Portfolio

Investment Objective

The Institutional Emerging Markets Portfolio (the “Portfolio”) seeks long-term capital appreciation through investments in equity securities of companies based in emerging markets.

Portfolio Fees and Expenses

This table describes the fees and expenses that you may pay if you buy and hold shares of the Portfolio. There is no sales charge imposed on purchases of shares.

Shareholder Fees
(fees paid directly from your investment)

Shareholder Fees	Institutional Harding Loevner Institutional Emerging Markets Portfolio Institutional Class
Redemption Fee (as a percentage of amount redeemed within 90 days or less from the date of purchase)	2.00%

Annual Portfolio Operating Expenses
(expenses that you pay each year as a percentage of the
value of your investment)

Annual Fund Operating Expenses		Institutional Harding Loevner Institutional Emerging Markets Portfolio Institutional Class
Management Fees	[1]	1.15%
Distribution (12b-1) Fees	[1]	none
Other Expenses	[1]	0.19%
Total Annual Portfolio Operating Expenses	[1]	1.34%
Fee Waiver and/or Expense Reimbursement	[1][2]	(0.04%)
Total Annual Portfolio Operating Expenses After Fee Waiver and/or Expense Reimbursement	[1]	1.30%

■    Example:

This example is intended to help you compare the cost of investing in the Portfolio with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Portfolio for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Portfolio’s operating expenses remain the same, except that the example assumes that the fee waiver and expense reimbursement pertains only through February 28, 2014. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example (USD $)	1 Year	3 Years	5 Years	10 Years
Institutional Harding Loevner Institutional Emerging Markets Portfolio Institutional Class	132	421	730	1,609

Portfolio Turnover

The Portfolio pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Portfolio shares are held in a taxable account. These costs, which are not reflected in annual portfolio operating expenses or in the Example, affect the Portfolio’s performance. During the most recent fiscal year, the Portfolio’s portfolio turnover rate was 42% of the average value of its portfolio.

Principal Investment Strategies

The Portfolio invests primarily in companies that are based in emerging and frontier markets. It may also invest in short-term or other debt securities. Emerging and frontier markets offer investment opportunities that arise from long-term trends in demographics, deregulation, offshore outsourcing and improving corporate governance in developing countries. Harding Loevner LP (“Harding Loevner”), the Portfolio’s investment adviser, undertakes fundamental research in an effort to identify companies that are well managed, financially sound, fast growing and strongly competitive, and whose shares are under-priced relative to their intrinsic value. To reduce its volatility, the Portfolio is diversified across dimensions of geography, industry and currency. The Portfolio normally holds 50-80 investments across at least 15 countries. Emerging and frontier markets include countries that have an emerging stock market as defined by Morgan Stanley Capital International, countries or markets with low- to middle-income economies as classified by the World Bank, and other countries or markets with similar characteristics. Emerging and frontier markets tend to have relatively low gross national product per capita compared to the world’s major economies and may have the potential for rapid economic growth.

Factors bearing on whether a company is considered to be “based” in an emerging or frontier market may include: (1) it is legally domiciled in an emerging or frontier market; (2) it conducts at least 50% of its business, as measured by the location of its sales, earnings, assets, or production, in an emerging or frontier market; or (3) it has the principal exchange listing for its securities in an emerging or frontier market.

The Portfolio will invest broadly in equity and debt securities of companies domiciled in one of at least 15 countries with emerging or frontier markets, generally considered to include all countries except Australia, Austria, Belgium, Canada, Denmark, Finland, France, Germany, Greece, Hong Kong, Ireland, Israel, Italy, Japan, the Netherlands, New Zealand, Norway, Portugal, Singapore, Spain, Sweden, Switzerland, the United Kingdom and the United States. At least 65% of the Portfolio’s total assets will be denominated in at least three currencies other than the U.S. Dollar. For purposes of compliance with this restriction, American Depositary Receipts, Global Depositary Receipts and European Depositary Receipts (collectively, “Depositary Receipts”) will be considered to be denominated in the currency of the country where the securities underlying the Depositary Receipts are traded.

The Portfolio invests at least 65% of its total assets in common stocks, preferred stocks, rights and warrants issued by companies that are based in emerging or frontier markets, securities convertible into such securities (including Depositary Receipts), and investment companies that invest in the types of securities in which the Portfolio would normally invest. The Portfolio also may invest in securities of U.S. companies that derive, or are expected to derive, a significant portion of their revenues from their foreign operations, although under normal circumstances, not more than 15% of the Portfolio’s total assets will be invested in securities of U.S. companies. The Portfolio also may invest up to 35% of its total assets in debt securities of domestic and foreign issuers, including such instruments as corporate bonds, debentures, notes, commercial paper, short-term notes, medium-term notes and variable rate notes.

The Portfolio invests at least 80% of its net assets (plus any borrowings for investment purposes) in emerging and frontier markets securities. This strategy is not fundamental, but should the Portfolio decide to change this strategy, it will provide shareholders with at least 60 days’ prior written notice.

The Portfolio also may invest in derivatives, including forward foreign currency exchange contracts and equity derivative securities such as participation notes; options on common stocks; and options, futures and options on futures on foreign common stock indices. Because some emerging market countries do not permit foreigners to participate directly in their securities markets or otherwise present difficulties for efficient foreign investment, the Portfolio may use equity derivative securities, and, in particular, participation notes, to gain exposure to those countries.

Principal Risks

The Portfolio is subject to numerous risks, any of which could cause an investor to lose money. The principal risks of the Portfolio are as follows:

• Market Risk:  Investments in the Portfolio may lose value due to a general downturn in stock markets.

• Currency Risk:  Foreign currencies may experience steady or sudden devaluation relative to the U.S. dollar, adversely affecting the value of the Portfolio’s investments. Because the Portfolio’s net asset value is determined on the basis of U.S. dollars, if the local currency of a foreign market depreciates against the U.S. dollar, you may lose money even if the foreign market prices of the Portfolio’s holdings rise.

• Foreign Investment Risk:  Securities issued by foreign entities involve risks not associated with U.S. investments. These risks include additional taxation, political, economic, social or diplomatic instability, and the above-mentioned possibility of changes in foreign currency exchange rates. There may also be less publicly-available information about a foreign issuer.

• Emerging and Frontier Market Risk:  Emerging and frontier market securities involve unique risks, such as exposure to economies less diverse and mature than that of the U.S. or more established foreign markets. Economic or political instability may cause larger price changes in emerging or frontier market securities than in securities of issuers based in more developed foreign countries.

• Debt Securities Risk:  Debt securities may lose value due to unfavorable fluctuations in the level of interest rates or due to a decline in the creditworthiness of the issuer. As interest rates rise, the value of debt securities declines. This risk is generally greater for debt securities with longer maturities than for debt securities with shorter maturities.

• Participation Notes Risk:  Participation notes are designed to replicate the return of a particular underlying equity or debt security, currency or market. Participation notes involve the same risks associated with a direct investment in the underlying security, currency or market. In addition, participation notes involve counterparty risk, because the Portfolio has no rights against the issuer(s) of the underlying security(ies) and must rely on the creditworthiness of the issuer of the participation note.

Portfolio Performance

The bar chart below shows how the Portfolio’s investment results have varied from year to year. The table that follows shows how the Portfolio’s average annual total returns compare with a broad measure of market performance. Together, these provide an indication of the risks of investing in the Portfolio. How the Portfolio has performed in the past (before and after taxes) is not necessarily an indication of how it will perform in the future.

Updated Portfolio performance information is available at www.hardingloevnerfunds.com or by calling (877) 435-8105.

Institutional Emerging Markets Portfolio

The best calendar quarter return during the period shown above was 33.22% in the 2nd quarter of 2009; the worst was -28.41% in the 4th quarter of 2008.

Average Annual Total Returns
(for the periods ended December 31, 2012)

Average Annual Total Returns Institutional Harding Loevner Institutional Emerging Markets Portfolio		1-Year	5-Year	Since Inception	Inception Date
Institutional Class		22.46%	(0.88%)	9.56%	Oct. 17, 2005
Institutional Class Return After Taxes on Distributions	[1]	22.33%	(1.00%)	9.36%	Oct. 17, 2005
Institutional Class Return After Taxes on Distributions and Sale of Portfolio Shares	[1]	14.76%	(0.73%)	8.43%	Oct. 17, 2005
MSCI Emerging Markets (net) Index (reflects no deduction for fees, expenses, or taxes)		18.23%	(0.92%)	10.12%	Oct. 17, 2005

[1] Expense information in this table has been restated to reflect current fees. Therefore, the expenses in this table will not correlate to the expenses shown in the Financial Highlights of the Portfolio.

[2] Harding Loevner LP has contractually agreed to waive a portion of its management fee and/or reimburse the Portfolio for its other operating expenses to the extent Total Annual Portfolio Operating Expenses, as a percentage of average daily net assets, exceed 1.30% through February 28, 2014.

[1] After-tax returns in the table above are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. In some cases, the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Portfolio shares at the end of the measurement period. Actual after-tax returns depend on an investor's tax situation and may differ from those shown, and after-tax returns shown are not relevant to investors who hold their Portfolio shares through tax-deferred arrangements, such as 401(k) plans or Individual Retirement Accounts.

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	HARDING LOEVNER FUNDS INC
Prospectus Date	rr_ProspectusDate	Feb. 28, 2013
Institutional | Harding Loevner International Equity Portfolio
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	International Equity Portfolio
Objective [Heading]	rr_ObjectiveHeading	Investment Objective
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	The International Equity Portfolio (the “Portfolio”) seeks long-term capital appreciation through investments in equity securities of companies based outside the United States.
Expense [Heading]	rr_ExpenseHeading	Portfolio Fees and Expenses
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	This table describes the fees and expenses that you may pay if you buy and hold shares of the Institutional Class of the Portfolio. There is no sales charge imposed on purchases of shares.
Shareholder Fees Caption [Text]	rr_ShareholderFeesCaption	Shareholder Fees (fees paid directly from your investment)
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	Annual Portfolio Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Fee Waiver or Reimbursement over Assets, Date of Termination	rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination	February 28, 2014
Portfolio Turnover [Heading]	rr_PortfolioTurnoverHeading	Portfolio Turnover
Portfolio Turnover [Text Block]	rr_PortfolioTurnoverTextBlock	The Portfolio pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Portfolio shares are held in a taxable account. These costs, which are not reflected in annual portfolio operating expenses or in the Example, affect the Portfolio’s performance. During the most recent fiscal year, the Portfolio’s portfolio turnover rate was 14% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	14.00%
Expense Example [Heading]	rr_ExpenseExampleHeading	■    Example:
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	This example is intended to help you compare the cost of investing in the Institutional Class of the Portfolio with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Institutional Class of the Portfolio for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Institutional Class’s operating expenses remain the same, except the example assumes that the fee waiver and expense reimbursement agreement pertains only through February 28, 2014. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Strategy [Heading]	rr_StrategyHeading	Principal Investment Strategies
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	The Portfolio invests in companies based in developed markets outside the U.S. as well as in established companies in emerging and frontier markets. Harding Loevner LP (“Harding Loevner”), the Portfolio’s investment adviser, undertakes fundamental research in an effort to identify companies that are well managed, financially sound, fast growing and strongly competitive and whose shares are under-priced relative to their intrinsic value. To reduce its volatility, the Portfolio is diversified across dimensions of geography, industry, currency and market capitalization. The Portfolio normally holds 35-75 investments across at least 15 countries. Factors bearing on whether a company is considered to be “based” outside the United States may include: (1) it is legally domiciled outside the United States; (2) it conducts at least 50% of its business, as measured by the location of its sales, earnings, assets, or production, outside the United States; or (3) it has the principal exchange listing for its securities outside the United States. The Portfolio will normally invest broadly in equity securities of companies domiciled in the following countries and regions: (1) Europe; (2) the Pacific Rim; (3) Canada and Mexico; and (4) countries with emerging or frontier markets. At least 65% of total assets will be denominated in at least three currencies other than the U.S. Dollar. For purposes of compliance with this restriction, American Depositary Receipts, Global Depositary Receipts, and European Depositary Receipts (collectively, “Depositary Receipts”), will be considered to be denominated in the currency of the country where the securities underlying the Depositary Receipts are traded. The Portfolio invests at least 80% of its net assets (plus any borrowings for investment purposes) in common stocks, preferred stocks, rights and warrants issued by companies that are based outside the United States, securities convertible into such securities (including Depositary Receipts), and investment companies that invest in the types of securities in which the Portfolio would normally invest. This strategy is not fundamental, but should the Portfolio decide to change this strategy, it will provide shareholders with at least 60 days’ prior written notice. The Portfolio also may invest in securities of U.S. companies that derive, or are expected to derive, a significant portion of their revenues from their foreign operations, although under normal circumstances not more than 15% of the Portfolio’s total assets will be invested in securities of U.S. companies.
Risk [Heading]	rr_RiskHeading	Principal Risks
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	The Portfolio is subject to numerous risks, any of which could cause an investor to lose money. The principal risks of the Portfolio are as follows: Market Risk:  Investments in the Portfolio may lose value due to a general downturn in stock markets. Currency Risk:  Foreign currencies may experience steady or sudden devaluation relative to the U.S. dollar, adversely affecting the value of the Portfolio’s investments. Because the Portfolio’s net asset value is determined on the basis of U.S. dollars, if the local currency of a foreign market depreciates against the U.S. dollar, you may lose money even if the foreign market prices of the Portfolio’s holdings rise. Foreign Investment Risk:  Securities issued by foreign entities involve risks not associated with U.S. investments. These risks include additional taxation, political, economic, social or diplomatic instability, and the above-mentioned possibility of changes in foreign currency exchange rates. There may also be less publicly-available information about a foreign issuer. Emerging and Frontier Market Risk:  Emerging and frontier market securities involve unique risks, such as exposure to economies less diverse and mature than that of the U.S. or more established foreign markets. Economic or political instability may cause larger price changes in emerging or frontier market securities than in securities of issuers based in more developed foreign countries.
Risk Lose Money [Text]	rr_RiskLoseMoney	The Portfolio is subject to numerous risks, any of which could cause an investor to lose money.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	Portfolio Performance
Performance Narrative [Text Block]	rr_PerformanceNarrativeTextBlock	The bar chart below shows how the Portfolio’s investment results have varied from year to year. The table that follows shows how the Portfolio’s Institutional Class average annual total returns compare with a broad measure of market performance. Together, these provide an indication of the risks of investing in the Portfolio. How the Institutional Class of the Portfolio has performed in the past (before and after taxes) is not necessarily an indication of how it will perform in the future. Updated Portfolio performance information is available at www.hardingloevnerfunds.com or by calling (877) 435-8105.
Performance Information Illustrates Variability of Returns [Text]	rr_PerformanceInformationIllustratesVariabilityOfReturns	The bar chart below shows how the Portfolio’s investment results have varied from year to year. The table that follows shows how the Portfolio’s Institutional Class average annual total returns compare with a broad measure of market performance.
Performance Availability Phone [Text]	rr_PerformanceAvailabilityPhone	(877) 435-8105
Performance Availability Website Address [Text]	rr_PerformanceAvailabilityWebSiteAddress	www.hardingloevnerfunds.com
Performance Past Does Not Indicate Future [Text]	rr_PerformancePastDoesNotIndicateFuture	How the Institutional Class of the Portfolio has performed in the past (before and after taxes) is not necessarily an indication of how it will perform in the future.
Bar Chart [Heading]	rr_BarChartHeading	International Equity Portfolio
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	The best calendar quarter return during the period shown above was 21.43% in the 2nd quarter of 2009; the worst was -22.12% in the 4th quarter of 2008.
Performance Table Heading	rr_PerformanceTableHeading	Average Annual Total Returns (for the periods ended December 31, 2012)
Performance Table Uses Highest Federal Rate	rr_PerformanceTableUsesHighestFederalRate	After-tax returns in the table above are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred	rr_PerformanceTableNotRelevantToTaxDeferred	Actual after-tax returns depend on an investor’s tax situation and may differ from those shown, and after-tax returns shown are not relevant to investors who hold their Portfolio shares through tax-deferred arrangements, such as 401(k) plans or Individual Retirement Accounts.
Performance Table Explanation after Tax Higher	rr_PerformanceTableExplanationAfterTaxHigher	In some cases, the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Portfolio shares at the end of the measurement period.
Institutional | Harding Loevner International Equity Portfolio | Institutional Class
Risk/Return:	rr_RiskReturnAbstract
Redemption Fee (as a percentage of amount redeemed within 90 days or less from the date of purchase)	rr_RedemptionFeeOverRedemption	2.00%
Management Fees	rr_ManagementFeesOverAssets	0.74%
Distribution (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Other Expenses	rr_OtherExpensesOverAssets	0.13%
Total Annual Portfolio Operating Expenses	rr_ExpensesOverAssets	0.87%
Fee Waiver and/or Expense Reimbursement	rr_FeeWaiverOrReimbursementOverAssets	none	[1]
Total Annual Portfolio Operating Expenses After Fee Waiver and/or Expense Reimbursement	rr_NetExpensesOverAssets	0.87%	[1]
1 Year	rr_ExpenseExampleYear01	89
3 Years	rr_ExpenseExampleYear03	278
5 Years	rr_ExpenseExampleYear05	482
10 Years	rr_ExpenseExampleYear10	1,073
2003	rr_AnnualReturn2003	26.96%
2004	rr_AnnualReturn2004	11.64%
2005	rr_AnnualReturn2005	20.16%
2006	rr_AnnualReturn2006	23.01%
2007	rr_AnnualReturn2007	12.93%
2008	rr_AnnualReturn2008	(39.24%)
2009	rr_AnnualReturn2009	40.57%
2010	rr_AnnualReturn2010	17.49%
2011	rr_AnnualReturn2011	(9.78%)
2012	rr_AnnualReturn2012	20.28%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	best calendar quarter return
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Jun. 30, 2009
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	21.43%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	the worst
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Dec. 31, 2008
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(22.12%)
1-Year	rr_AverageAnnualReturnYear01	20.28%
5-Year	rr_AverageAnnualReturnYear05	1.72%
10-Year	rr_AverageAnnualReturnYear10	9.93%
Institutional | Harding Loevner International Equity Portfolio | Return After Taxes on Distributions | Institutional Class
Risk/Return:	rr_RiskReturnAbstract
1-Year	rr_AverageAnnualReturnYear01	20.14%	[2]
5-Year	rr_AverageAnnualReturnYear05	1.05%	[2]
10-Year	rr_AverageAnnualReturnYear10	9.34%	[2]
Institutional | Harding Loevner International Equity Portfolio | Return After Taxes on Distributions and Sale of Portfolio Shares | Institutional Class
Risk/Return:	rr_RiskReturnAbstract
1-Year	rr_AverageAnnualReturnYear01	13.38%	[2]
5-Year	rr_AverageAnnualReturnYear05	1.28%	[2]
10-Year	rr_AverageAnnualReturnYear10	8.78%	[2]
Institutional | Harding Loevner International Equity Portfolio | MSCI All Country World ex-U.S. (net) Index (reflects no deduction for fees, expenses, or taxes)
Risk/Return:	rr_RiskReturnAbstract
1-Year	rr_AverageAnnualReturnYear01	16.84%
5-Year	rr_AverageAnnualReturnYear05	(2.89%)
10-Year	rr_AverageAnnualReturnYear10	9.75%

[1] Harding Loevner LP has contractually agreed to waive a portion of its management fee and/or reimburse the Portfolio for its other operating expenses to the extent Total Annual Portfolio Operating Expenses, as a percentage of average daily net assets, exceed 1.00% through February 28, 2014.

[2] After-tax returns in the table above are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. In some cases, the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Portfolio shares at the end of the measurement period. Actual after-tax returns depend on an investor's tax situation and may differ from those shown, and after-tax returns shown are not relevant to investors who hold their Portfolio shares through tax-deferred arrangements, such as 401(k) plans or Individual Retirement Accounts.

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Institutional | Harding Loevner International Small Companies Portfolio

International Small Companies Portfolio

Investment Objective

The International Small Companies Portfolio (the “Portfolio”) seeks long-term capital appreciation through investments in equity securities of small companies based outside the United States.

Portfolio Fees and Expenses

This table describes the fees and expenses that you may pay if you buy and hold shares of the Institutional Class of the Portfolio. There is no sales charge imposed on purchases of shares.

Shareholder Fees
(fees paid directly from your investment)

Shareholder Fees	Institutional Harding Loevner International Small Companies Portfolio Institutional Class
Redemption Fee (as a percentage of amount redeemed within 90 days or less from the date of purchase)	2.00%

Annual Portfolio Operating Expenses
(expenses that you pay each year as a percentage of the
value of your investment)

Annual Fund Operating Expenses		Institutional Harding Loevner International Small Companies Portfolio Institutional Class
Management Fees	[1]	1.25%
Distribution (12b-1) Fees	[1]	none
Other Expenses	[1]	0.39%
Total Annual Portfolio Operating Expenses	[1]	1.64%
Fee Waiver and/or Expense Reimbursement	[1][2]	(0.34%)
Total Annual Portfolio Operating Expenses After Fee Waiver and/or Expense Reimbursement	[1][2]	1.30%

■    Example:

This example is intended to help you compare the cost of investing in the Institutional Class of the Portfolio with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Institutional Class of the Portfolio for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Institutional Class’s operating expenses remain the same, except that the example assumes the fee waiver and expense reimbursement agreement pertains only through February 28, 2014. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example (USD $)	1 Year	3 Years	5 Years	10 Years
Institutional Harding Loevner International Small Companies Portfolio Institutional Class	132	484	860	1,915

Portfolio Turnover

The Portfolio pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Portfolio shares are held in a taxable account. These costs, which are not reflected in annual portfolio operating expenses or in the Example, affect the Portfolio’s performance. During the most recent fiscal year, the Portfolio’s portfolio turnover rate was 10% of the average value of its portfolio.

Principal Investment Strategies

The Portfolio invests in small companies based outside the U.S., including companies in emerging and frontier as well as in developed markets. Companies considered to be small are those with a market capitalization below US$3 billion. Harding Loevner LP (“Harding Loevner”), the Portfolio’s investment adviser, undertakes fundamental research in an effort to identify companies that are well managed, financially sound, fast growing and strongly competitive and whose shares are under-priced relative to their intrinsic value. To reduce its volatility, the Portfolio is diversified across dimensions of geography, industry and currency. The Portfolio normally holds 50-200 investments across at least 12 countries.

Factors bearing on whether a company is considered to be “based” outside the United States may include: (1) it is legally domiciled outside the United States; (2) it conducts at least 50% of its business, as measured by the location of its sales, earnings, assets, or production, outside the United States; or (3) it has the principal exchange listing for its securities outside the United States.

The Portfolio will normally invest broadly in equity securities of small companies domiciled in the following countries and regions: (1) Europe; (2) the Pacific Rim; (3) Canada and Mexico; and (4) countries with emerging or frontier markets. At least 65% of total assets will be denominated in at least three currencies other than the U.S. Dollar. For purposes of compliance with this restriction, American Depositary Receipts, Global Depositary Receipts and European Depositary Receipts (collectively, “Depositary Receipts”) will be considered to be denominated in the currency of the country where the securities underlying the Depositary Receipts are traded.

The Portfolio invests at least 80% of its net assets (plus any borrowings for investment purposes) in common stocks, preferred stocks, rights and warrants issued by small companies that are based outside the United States, securities convertible into such securities (including Depositary Receipts), and investment companies that invest in the types of securities in which the Portfolio would normally invest. This strategy is not fundamental, but should the Portfolio decide to change this strategy, it will provide shareholders with at least 60 days’ prior written notice. If the Portfolio continues to hold securities of small companies whose market capitalization, subsequent to purchase, grows to exceed US$3 billion, it may continue to treat them as small for the purposes of the 80% requirement. The Portfolio also may invest in securities of small U.S. companies that derive, or are expected to derive, a significant portion of their revenues from their foreign operations, although under normal circumstances not more than 15% of the Portfolio’s total assets will be invested in securities of U.S. companies.

Principal Risks

The Portfolio is subject to numerous risks, any of which could cause an investor to lose money. The principal risks of the Portfolio are as follows:

• Market Risk:  Investments in the Portfolio may lose value due to a general downturn in stock markets.

• Currency Risk:  Foreign currencies may experience steady or sudden devaluation relative to the U.S. dollar, adversely affecting the value of the Portfolio’s investments. Because the Portfolio’s net asset value is determined on the basis of U.S. dollars, if the local currency of a foreign market depreciates against the U.S. dollar, you may lose money even if the foreign market prices of the Portfolio’s holdings rise.

• Foreign Investment Risk:  Securities issued by foreign entities involve risks not associated with U.S. investments. These risks include additional taxation, political, economic, social or diplomatic instability, and the above-mentioned possibility of changes in the foreign currency exchange rates. There may also be less publicly-available information about a foreign issuer.

• Emerging and Frontier Market Risk:  Emerging and frontier market securities involve unique risks, such as exposure to economies less diverse and mature than that of the U.S. or more established foreign markets. Economic or political instability may cause larger price changes in emerging or frontier market securities than in securities of issuers based in more developed foreign countries.

• Small Company Risk:  The securities of smaller companies have historically exhibited more volatility with a lower degree of liquidity than large companies.

Portfolio Performance

The bar chart below shows the Portfolio’s investment results for the calendar year ended 2012. The table that follows shows how the Portfolio’s Institutional Class average annual total returns compare with a broad measure of market performance. Together, these provide an indication of the risks of investing in the Portfolio. How the Institutional Class of the Portfolio has performed in the past (before and after taxes) is not necessarily an indication of how it will perform in the future.

Updated Portfolio performance information is available at www.hardingloevnerfunds.com or by calling (877) 435-8105.

International Small Companies Portfolio

The best calendar quarter return during the period shown above was 16.56% in the 1st quarter of 2012; the worst was -5.65% in the 2nd quarter of 2012.

Average Annual Total Returns
(for the periods ended December 31, 2012)

Average Annual Total Returns Institutional Harding Loevner International Small Companies Portfolio		1-Year	Since Inception	Inception Date
Institutional Class		24.30%	(0.47%)	Jun. 30, 2011
Institutional Class Return After Taxes on Distributions	[1]	24.08%	(0.68%)	Jun. 30, 2011
Institutional Class Return After Taxes on Distributions and Sale of Portfolio Shares	[1]	16.08%	(0.42%)	Jun. 30, 2011
MSCI All Country World ex-U.S. Small Cap (net) Index (reflects no deduction for fees, expenses, or taxes)		18.50%	(3.25%)	Jun. 30, 2011

[1] Expense information in this table has been restated to reflect current fees. Therefore, the expenses in this table will not correlate to the expenses shown in the Financial Highlights of the Portfolio.

[2] Harding Loevner LP has contractually agreed to waive a portion of its management fee and/or reimburse the Portfolio for its other operating expenses to the extent Total Annual Portfolio Operating Expenses, as a percentage of average daily net assets, exceed 1.30% through February 28, 2014.

[1] After-tax returns in the table above are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. In some cases, the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Portfolio shares at the end of the measurement period. Actual after-tax returns depend on an investor's tax situation and may differ from those shown, and after-tax returns shown are not relevant to investors who hold their Portfolio shares through tax-deferred arrangements, such as 401(k) plans or Individual Retirement Accounts.

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	HARDING LOEVNER FUNDS INC
Prospectus Date	rr_ProspectusDate	Feb. 28, 2013
Advisor | Harding Loevner Emerging Markets Portfolio
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	Emerging Markets Portfolio
Objective [Heading]	rr_ObjectiveHeading	Investment Objective
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	The Emerging Markets Portfolio (the “Portfolio”) seeks long-term capital appreciation through investments in equity securities of companies based in emerging markets.
Expense [Heading]	rr_ExpenseHeading	Portfolio Fees and Expenses
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	This table describes the fees and expenses that you may pay if you buy and hold shares of the Advisor Class of the Portfolio. There is no sales charge imposed on purchases of shares.
Shareholder Fees Caption [Text]	rr_ShareholderFeesCaption	Shareholder Fees (fees paid directly from your investment)
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	Annual Portfolio Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Fee Waiver or Reimbursement over Assets, Date of Termination	rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination	February 28, 2014
Portfolio Turnover [Heading]	rr_PortfolioTurnoverHeading	Portfolio Turnover
Portfolio Turnover [Text Block]	rr_PortfolioTurnoverTextBlock	The Portfolio pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Portfolio shares are held in a taxable account. These costs, which are not reflected in annual portfolio operating expenses or in the Example, affect the Portfolio’s performance. During the most recent fiscal year, the Portfolio’s portfolio turnover rate was 36% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	36.00%
Expenses Restated to Reflect Current [Text]	rr_ExpensesRestatedToReflectCurrent	Expense information in this table has been restated to reflect current fees.
Expense Example [Heading]	rr_ExpenseExampleHeading	■    Example:
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	This example is intended to help you compare the cost of investing in the Advisor Class of the Portfolio with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Advisor Class of the Portfolio for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Advisor Class’s operating expenses remain the same, except that the example assumes the fee waiver and expense reimbursement agreement pertains only through February 28, 2014. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Strategy [Heading]	rr_StrategyHeading	Principal Investment Strategies
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	The Portfolio invests primarily in companies that are based in emerging and frontier markets. It may also invest in short-term or other debt securities. Emerging and frontier markets offer investment opportunities that arise from long-term trends in demographics, deregulation, offshore outsourcing and improving corporate governance in developing countries. Harding Loevner LP (“Harding Loevner”), the Portfolio’s investment adviser, undertakes fundamental research in an effort to identify companies that are well managed, financially sound, fast growing and strongly competitive, and whose shares are under-priced relative to their intrinsic value. To reduce its volatility, the Portfolio is diversified across dimensions of geography, industry and currency. The Portfolio normally holds 50-80 investments across at least 15 countries. Emerging and frontier markets include countries that have an emerging stock market as defined by Morgan Stanley Capital International, countries or markets with low- to middle-income economies as classified by the World Bank, and other countries or markets with similar characteristics. Emerging and frontier markets tend to have relatively low gross national product per capita compared to the world’s major economies and may have the potential for rapid economic growth. Factors bearing on whether a company is considered to be “based” in an emerging or frontier market may include: (1) it is legally domiciled in an emerging or frontier market; (2) it conducts at least 50% of its business, as measured by the location of its sales, earnings, assets, or production, in an emerging or frontier market; or (3) it has the principal exchange listing for its securities in an emerging or frontier market. The Portfolio will invest broadly in equity and debt securities of companies domiciled in one of at least 15 countries with emerging or frontier markets, generally considered to include all countries except Australia, Austria, Belgium, Canada, Denmark, Finland, France, Germany, Greece, Hong Kong, Ireland, Israel, Italy, Japan, the Netherlands, New Zealand, Norway, Portugal, Singapore, Spain, Sweden, Switzerland, the United Kingdom and the United States. At least 65% of the Portfolio’s total assets will be denominated in at least three currencies other than the U.S. Dollar. For purposes of compliance with this restriction, American Depositary Receipts, Global Depositary Receipts and European Depositary Receipts (collectively, “Depositary Receipts”) will be considered to be denominated in the currency of the country where the securities underlying the Depositary Receipts are traded. The Portfolio invests at least 65% of its total assets in common stocks, preferred stocks, rights and warrants issued by companies that are based in emerging or frontier markets, securities convertible into such securities (including Depositary Receipts), and investment companies that invest in the types of securities in which the Portfolio would normally invest. The Portfolio also may invest in securities of U.S. companies that derive, or are expected to derive, a significant portion of their revenues from their foreign operations, although under normal circumstances, not more than 15% of the Portfolio’s total assets will be invested in securities of U.S. companies. The Portfolio also may invest up to 35% of its total assets in debt securities of domestic and foreign issuers, including such instruments as corporate bonds, debentures, notes, commercial paper, short-term notes, medium-term notes and variable rate notes. The Portfolio invests at least 80% of its net assets (plus any borrowings for investment purposes) in emerging and frontier markets securities. This strategy is not fundamental, but should the Portfolio decide to change this strategy, it will provide shareholders with at least 60 days’ prior written notice. The Portfolio also may invest in derivatives, including forward foreign currency exchange contracts and equity derivative securities such as participation notes; options on common stocks; and options, futures and options on futures on foreign common stock indices. Because some emerging market countries do not permit foreigners to participate directly in their securities markets or otherwise present difficulties for efficient foreign investment, the Portfolio may use equity derivative securities, and, in particular, participation notes, to gain exposure to those countries.
Risk [Heading]	rr_RiskHeading	Principal Risks
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	The Portfolio is subject to numerous risks, any of which could cause an investor to lose money. The principal risks of the Portfolio are as follows: Market Risk:  Investments in the Portfolio may lose value due to a general downturn in stock markets. Currency Risk:  Foreign currencies may experience steady or sudden devaluation relative to the U.S. dollar, adversely affecting the value of the Portfolio’s investments. Because the Portfolio’s net asset value is determined on the basis of U.S. dollars, if the local currency of a foreign market depreciates against the U.S. dollar, you may lose money even if the foreign market prices of the Portfolio’s holdings rise. Foreign Investment Risk:  Securities issued by foreign entities involve risks not associated with U.S. investments. These risks include additional taxation, political, economic, social or diplomatic instability, and the above-mentioned possibility of changes in foreign currency exchange rates. There may also be less publicly-available information about a foreign issuer. Emerging and Frontier Market Risk:  Emerging and frontier market securities involve unique risks, such as exposure to economies less diverse and mature than that of the U.S. or more established foreign markets. Economic or political instability may cause larger price changes in emerging or frontier market securities than in securities of issuers based in more developed foreign countries. Debt Securities Risk:  Debt securities may lose value due to unfavorable fluctuations in the level of interest rates or due to a decline in the creditworthiness of the issuer. As interest rates rise, the value of debt securities declines. This risk is generally greater for debt securities with longer maturities than for debt securities with shorter maturities. Participation Notes Risk:  Participation notes are designed to replicate the return of a particular underlying equity or debt security, currency or market. Participation notes involve the same risks associated with a direct investment in the underlying security, currency, or market. In addition, participation notes involve counterparty risk, because the Portfolio has no rights against the issuer(s) of the underlying security(ies) and must rely on the creditworthiness of the issuer of the participation note.
Risk Lose Money [Text]	rr_RiskLoseMoney	The Portfolio is subject to numerous risks, any of which could cause an investor to lose money.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	Portfolio Performance
Performance Narrative [Text Block]	rr_PerformanceNarrativeTextBlock	The bar chart below shows how the Portfolio’s investment results have varied from year to year. The table that follows shows how the Advisor Class average annual total returns compare with a broad measure of market performance. Together these provide an indication of the risks of investing in the Portfolio. How the Advisor Class of the Portfolio has performed in the past (before and after taxes) is not necessarily an indication of how it will perform in the future. Updated Portfolio performance information is available at www.hardingloevnerfunds.com or by calling (877) 435-8105.
Performance Information Illustrates Variability of Returns [Text]	rr_PerformanceInformationIllustratesVariabilityOfReturns	The bar chart below shows how the Portfolio’s investment results have varied from year to year. The table that follows shows how the Advisor Class average annual total returns compare with a broad measure of market performance.
Performance Availability Phone [Text]	rr_PerformanceAvailabilityPhone	(877) 435-8105
Performance Availability Website Address [Text]	rr_PerformanceAvailabilityWebSiteAddress	www.hardingloevnerfunds.com
Performance Past Does Not Indicate Future [Text]	rr_PerformancePastDoesNotIndicateFuture	How the Advisor Class of the Portfolio has performed in the past (before and after taxes) is not necessarily an indication of how it will perform in the future.
Bar Chart [Heading]	rr_BarChartHeading	Emerging Markets Portfolio
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	The best calendar quarter return during the period shown above was 32.85% in the 2nd quarter of 2009; the worst was -27.99% in the 4th quarter of 2008.
Performance Table Heading	rr_PerformanceTableHeading	Average Annual Total Returns (for the periods ended December 31, 2012)
Performance Table Uses Highest Federal Rate	rr_PerformanceTableUsesHighestFederalRate	After-tax returns in the table above are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred	rr_PerformanceTableNotRelevantToTaxDeferred	Actual after-tax returns depend on an investor’s tax situation and may differ from those shown, and after-tax returns shown are not relevant to investors who hold their Portfolio shares through tax-deferred arrangements, such as 401(k) plans or Individual Retirement Accounts.
Performance Table Explanation after Tax Higher	rr_PerformanceTableExplanationAfterTaxHigher	In some cases, the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Portfolio shares at the end of the measurement period.
Advisor | Harding Loevner Emerging Markets Portfolio | Advisor Class
Risk/Return:	rr_RiskReturnAbstract
Redemption Fee (as a percentage of amount redeemed within 90 days or less from the date of purchase)	rr_RedemptionFeeOverRedemption	2.00%
Management Fees	rr_ManagementFeesOverAssets	1.14%	[1]
Distribution (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none	[1]
Other Expenses	rr_OtherExpensesOverAssets	0.33%	[1]
Total Annual Portfolio Operating Expenses	rr_ExpensesOverAssets	1.47%	[1]
Fee Waiver and/or Expense Reimbursement	rr_FeeWaiverOrReimbursementOverAssets	none	[1],[2]
Total Annual Portfolio Operating Expenses After Fee Waiver and/or Expense Reimbursement	rr_NetExpensesOverAssets	1.47%	[1],[2]
1 Year	rr_ExpenseExampleYear01	150
3 Years	rr_ExpenseExampleYear03	465
5 Years	rr_ExpenseExampleYear05	803
10 Years	rr_ExpenseExampleYear10	1,757
2003	rr_AnnualReturn2003	56.34%
2004	rr_AnnualReturn2004	28.85%
2005	rr_AnnualReturn2005	38.62%
2006	rr_AnnualReturn2006	28.73%
2007	rr_AnnualReturn2007	35.94%
2008	rr_AnnualReturn2008	(52.33%)
2009	rr_AnnualReturn2009	63.46%
2010	rr_AnnualReturn2010	20.98%
2011	rr_AnnualReturn2011	(17.51%)
2012	rr_AnnualReturn2012	22.73%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	best calendar quarter return
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Jun. 30, 2009
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	32.85%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	the worst
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Dec. 31, 2008
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(27.99%)
1-Year	rr_AverageAnnualReturnYear01	22.73%
5-Year	rr_AverageAnnualReturnYear05	(0.93%)
10-Year	rr_AverageAnnualReturnYear10	16.65%
Advisor | Harding Loevner Emerging Markets Portfolio | Return After Taxes on Distributions | Advisor Class
Risk/Return:	rr_RiskReturnAbstract
1-Year	rr_AverageAnnualReturnYear01	21.49%	[3]
5-Year	rr_AverageAnnualReturnYear05	(1.21%)	[3]
10-Year	rr_AverageAnnualReturnYear10	16.40%	[3]
Advisor | Harding Loevner Emerging Markets Portfolio | Return After Taxes on Distributions and Sale of Portfolio Shares | Advisor Class
Risk/Return:	rr_RiskReturnAbstract
1-Year	rr_AverageAnnualReturnYear01	16.43%	[3]
5-Year	rr_AverageAnnualReturnYear05	(0.77%)	[3]
10-Year	rr_AverageAnnualReturnYear10	15.24%	[3]
Advisor | Harding Loevner Emerging Markets Portfolio | MSCI Emerging Markets (net) Index (reflects no deduction for fees, expenses, or taxes)
Risk/Return:	rr_RiskReturnAbstract
1-Year	rr_AverageAnnualReturnYear01	18.23%
5-Year	rr_AverageAnnualReturnYear05	(0.92%)
10-Year	rr_AverageAnnualReturnYear10	16.51%

[1] Expense information in this table has been restated to reflect current fees. Therefore, the expenses in this table will not correlate to the expenses shown in the Financial Highlights of the Portfolio.

[2] Harding Loevner LP has contractually agreed to waive a portion of its management fee and/or reimburse the Portfolio for its other operating expenses to the extent Total Annual Portfolio Operating Expenses, as a percentage of average daily net assets, exceed 1.75% through February 28, 2014.

[3] After-tax returns in the table above are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. In some cases, the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Portfolio shares at the end of the measurement period. Actual after-tax returns depend on an investor's tax situation and may differ from those shown, and after-tax returns shown are not relevant to investors who hold their Portfolio shares through tax-deferred arrangements, such as 401(k) plans or Individual Retirement Accounts.

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Investor | Harding Loevner International Small Companies Portfolio

International Small Companies Portfolio

Investment Objective

The International Small Companies Portfolio (the “Portfolio”) seeks long-term capital appreciation through investments in equity securities of small companies based outside the United States.

Portfolio Fees and Expenses

This table describes the fees and expenses that you may pay if you buy and hold shares of the Investor Class of the Portfolio. There is no sales charge imposed on purchases of shares.

Shareholder Fees
(fees paid directly from your investment)

Shareholder Fees	Investor Harding Loevner International Small Companies Portfolio Investor Class
Redemption Fee (as a percentage of amount redeemed within 90 days or less from the date of purchase)	2.00%

Annual Portfolio Operating Expenses
(expenses that you pay each year as a
percentage of the value of your investment)

Annual Fund Operating Expenses		Investor Harding Loevner International Small Companies Portfolio Investor Class
Management Fees	[1]	1.25%
Distribution (12b-1) Fees	[1]	0.25%
Other Expenses	[1]	0.52%
Total Annual Portfolio Operating Expenses	[1]	2.02%
Fee Waiver and/or Expense Reimbursement	[1][2]	(0.47%)
Total Annual Portfolio Operating Expenses After Fee Waiver and/or Expense Reimbursement	[1][2]	1.55%

■    Example:

This example is intended to help you compare the cost of investing in the Investor Class of the Portfolio with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Investor Class of the Portfolio for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Investor Class’s operating expenses remain the same, except that the example assumes the fee waiver and expense reimbursement agreement pertains only through February 28, 2014. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example (USD $)	1 Year	3 Years	5 Years	10 Years
Investor Harding Loevner International Small Companies Portfolio Investor Class	158	588	1,045	2,310

Portfolio Turnover

The Portfolio pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Portfolio shares are held in a taxable account. These costs, which are not reflected in annual portfolio operating expenses or in the Example, affect the Portfolio’s performance. During the most recent fiscal year, the Portfolio’s portfolio turnover rate was 10% of the average value of its portfolio.

Principal Investment Strategies

The Portfolio invests in small companies based outside the U.S., including companies in emerging and frontier as well as in developed markets. Companies considered to be small are those with a market capitalization below US$3 billion. Harding Loevner LP (“Harding Loevner”), the Portfolio’s investment adviser, undertakes fundamental research in an effort to identify companies that are well managed, financially sound, fast growing and strongly competitive and whose shares are under-priced relative to their intrinsic value. To reduce its volatility, the Portfolio is diversified across dimensions of geography, industry and currency. The Portfolio normally holds 50-200 investments across at least 12 countries.

Factors bearing on whether a company is considered to be “based” outside the United States may include: (1) it is legally domiciled outside the United States; (2) it conducts at least 50% of its business, as measured by the location of its sales, earnings, assets, or production, outside the United States; or (3) it has the principal exchange listing for its securities outside the United States.

The Portfolio will normally invest broadly in companies domiciled in the following countries and regions: (1) Europe; (2) the Pacific Rim; (3) Canada and Mexico; and (4) countries with emerging or frontier markets. At least 65% of total assets will be denominated in at least three currencies other than the U.S. Dollar. For purposes of compliance with this restriction, American Depositary Receipts, Global Depositary Receipts, and European Depositary Receipts (collectively, “Depositary Receipts”) will be considered to be denominated in the currency of the country where the securities underlying the Depositary Receipts are traded.

The Portfolio invests at least 80% of its net assets (plus any borrowings for investment purposes) in common stocks, preferred stocks, rights and warrants issued by small companies that are based outside the United States, securities convertible into such securities (including Depositary Receipts), and investment companies that invest in the types of securities in which the Portfolio would normally invest. This strategy is not fundamental, but should the Portfolio decide to change this strategy, it will provide shareholders with at least 60 days’ prior written notice. If the Portfolio continues to hold securities of small companies whose market capitalization, subsequent to purchase, grows to exceed US$3 billion, it may continue to treat them as small for the purposes of the 80% requirement. The Portfolio also may invest in securities of U.S. companies that derive, or are expected to derive, a significant portion of their revenues from their foreign operations, although under normal circumstances not more than 15% of the Portfolio’s total assets will be invested in securities of U.S. companies.

The Portfolio may also invest in derivatives, including forward foreign currency exchange contracts and equity derivative securities such as participation notes; options on common stocks; and options, futures, and options on futures on foreign common stock indices. Because some emerging market countries do not permit foreigners to participate directly in their securities markets or otherwise present difficulties for efficient foreign investment, the Portfolio may use equity derivative securities, and, in particular, participation notes, to gain exposure to those countries.

Principal Risks

The Portfolio is subject to numerous risks, any of which could cause an investor to lose money. The principal risks of the Portfolio are as follows:

• Market Risk:  Investments in the Portfolio may lose value due to a general downturn in stock markets.

• Currency Risk:  Foreign currencies may experience steady or sudden devaluation relative to the U.S. dollar, adversely affecting the value of the Portfolio’s investments. Because the Portfolio’s net asset value is determined on the basis of U.S. dollars, if the local currency of a foreign market depreciates against the U.S. dollar, you may lose money even if the foreign market prices of the Portfolio’s holdings rise.

• Foreign Investment Risk:  Securities issued by foreign entities involve risks not associated with U.S. investments. These risks include additional taxation, political, economic, social or diplomatic instability, and the above-mentioned possibility of changes in foreign currency exchange rates. There may also be less publicly-available information about a foreign issuer.

• Emerging and Frontier Market Risk:  Emerging and frontier market securities involve unique risks, such as exposure to economies less diverse and mature than that of the U.S. or more established foreign markets. Economic or political instability may cause larger price changes in emerging or frontier market securities than in securities of issuers based in more developed foreign countries.

• Small Company Risk:  The securities of smaller companies have historically exhibited more volatility with a lower degree of liquidity than large companies.

• Participation Notes Risk:  Participation notes are designed to replicate the return of a particular underlying equity or debt security, currency or market. Participation notes involve the same risks associated with a direct investment in the underlying security, currency, or market. In addition, participation notes involve counterparty risk, because the Portfolio has no rights against the issuer(s) of the underlying security(ies) and must rely on the creditworthiness of the issuer of the participation note.

Portfolio Performance

The bar chart below shows how the Portfolio’s investment results have varied from year to year. The table that follows shows how the Portfolio’s Investor Class average annual total returns compare with a broad measure of market performance. Together, these provide an indication of the risks of investing in the Portfolio. How the Investor Class of the Portfolio has performed in the past (before and after taxes) is not necessarily an indication of how it will perform in the future.

Updated Portfolio performance information is available at www.hardingloevnerfunds.com or by calling (877) 435-8105.

International Small Companies Portfolio

The best calendar quarter return during the period shown above was 42.23% in the 2nd quarter of 2009; the worst was -24.79% in the 4th quarter of 2008.

Average Annual Total Returns
(for the periods ended December 31, 2012)

Average Annual Total Returns Investor Harding Loevner International Small Companies Portfolio		1-Year	5-Year	Since Inception	Inception Date
Investor Class		23.88%	3.35%	3.97%	Mar. 26, 2007
Investor Class Return After Taxes on Distributions	[1]	23.71%	3.33%	3.92%	Mar. 26, 2007
Investor Class Return After Taxes on Distributions and Sale of Portfolio Shares	[1]	15.76%	2.93%	3.47%	Mar. 26, 2007
MSCI All Country World ex-U.S. Small Cap (net) Index (reflects no reduction for fees, expenses, or taxes)		18.50%	(0.40%)	0.33%	Mar. 26, 2007

[1] Expense information in this table has been restated to reflect current fees. Therefore, the expenses in this table will not correlate to the expenses shown in the Financial Highlights of the Portfolio.

[2] Harding Loevner LP has contractually agreed to waive a portion of its management fees and/or reimburse the Portfolio for its other operating expenses to the extent Total Annual Portfolio Operating Expenses, as a percentage of average daily net assets, exceed 1.55% through February 28, 2014.

[1] After-tax returns in the table above are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. In some cases, the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Portfolio shares at the end of the measurement period. Actual after-tax returns depend on an investor's tax situation and may differ from those shown, and after-tax returns shown are not relevant to investors who hold their Portfolio shares through tax-deferred arrangements, such as 401(k) plans or Individual Retirement Accounts.

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Advisor | Harding Loevner Emerging Markets Portfolio

Emerging Markets Portfolio

Investment Objective

The Emerging Markets Portfolio (the “Portfolio”) seeks long-term capital appreciation through investments in equity securities of companies based in emerging markets.

Portfolio Fees and Expenses

This table describes the fees and expenses that you may pay if you buy and hold shares of the Advisor Class of the Portfolio. There is no sales charge imposed on purchases of shares.

Shareholder Fees
(fees paid directly from your investment)

Shareholder Fees	Advisor Harding Loevner Emerging Markets Portfolio Advisor Class
Redemption Fee (as a percentage of amount redeemed within 90 days or less from the date of purchase)	2.00%

Annual Portfolio Operating Expenses
(expenses that you pay each year as a
percentage of the value of your investment)

Annual Fund Operating Expenses		Advisor Harding Loevner Emerging Markets Portfolio Advisor Class
Management Fees	[1]	1.14%
Distribution (12b-1) Fees	[1]	none
Other Expenses	[1]	0.33%
Total Annual Portfolio Operating Expenses	[1]	1.47%
Fee Waiver and/or Expense Reimbursement	[1][2]	none
Total Annual Portfolio Operating Expenses After Fee Waiver and/or Expense Reimbursement	[1][2]	1.47%

■    Example:

This example is intended to help you compare the cost of investing in the Advisor Class of the Portfolio with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Advisor Class of the Portfolio for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Advisor Class’s operating expenses remain the same, except that the example assumes the fee waiver and expense reimbursement agreement pertains only through February 28, 2014. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example (USD $)	1 Year	3 Years	5 Years	10 Years
Advisor Harding Loevner Emerging Markets Portfolio Advisor Class	150	465	803	1,757

Portfolio Turnover

The Portfolio pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Portfolio shares are held in a taxable account. These costs, which are not reflected in annual portfolio operating expenses or in the Example, affect the Portfolio’s performance. During the most recent fiscal year, the Portfolio’s portfolio turnover rate was 36% of the average value of its portfolio.

Principal Investment Strategies

The Portfolio invests primarily in companies that are based in emerging and frontier markets. It may also invest in short-term or other debt securities. Emerging and frontier markets offer investment opportunities that arise from long-term trends in demographics, deregulation, offshore outsourcing and improving corporate governance in developing countries. Harding Loevner LP (“Harding Loevner”), the Portfolio’s investment adviser, undertakes fundamental research in an effort to identify companies that are well managed, financially sound, fast growing and strongly competitive, and whose shares are under-priced relative to their intrinsic value. To reduce its volatility, the Portfolio is diversified across dimensions of geography, industry and currency. The Portfolio normally holds 50-80 investments across at least 15 countries. Emerging and frontier markets include countries that have an emerging stock market as defined by Morgan Stanley Capital International, countries or markets with low- to middle-income economies as classified by the World Bank, and other countries or markets with similar characteristics. Emerging and frontier markets tend to have relatively low gross national product per capita compared to the world’s major economies and may have the potential for rapid economic growth.

Factors bearing on whether a company is considered to be “based” in an emerging or frontier market may include: (1) it is legally domiciled in an emerging or frontier market; (2) it conducts at least 50% of its business, as measured by the location of its sales, earnings, assets, or production, in an emerging or frontier market; or (3) it has the principal exchange listing for its securities in an emerging or frontier market.

The Portfolio will invest broadly in equity and debt securities of companies domiciled in one of at least 15 countries with emerging or frontier markets, generally considered to include all countries except Australia, Austria, Belgium, Canada, Denmark, Finland, France, Germany, Greece, Hong Kong, Ireland, Israel, Italy, Japan, the Netherlands, New Zealand, Norway, Portugal, Singapore, Spain, Sweden, Switzerland, the United Kingdom and the United States. At least 65% of the Portfolio’s total assets will be denominated in at least three currencies other than the U.S. Dollar. For purposes of compliance with this restriction, American Depositary Receipts, Global Depositary Receipts and European Depositary Receipts (collectively, “Depositary Receipts”) will be considered to be denominated in the currency of the country where the securities underlying the Depositary Receipts are traded.

The Portfolio invests at least 65% of its total assets in common stocks, preferred stocks, rights and warrants issued by companies that are based in emerging or frontier markets, securities convertible into such securities (including Depositary Receipts), and investment companies that invest in the types of securities in which the Portfolio would normally invest. The Portfolio also may invest in securities of U.S. companies that derive, or are expected to derive, a significant portion of their revenues from their foreign operations, although under normal circumstances, not more than 15% of the Portfolio’s total assets will be invested in securities of U.S. companies. The Portfolio also may invest up to 35% of its total assets in debt securities of domestic and foreign issuers, including such instruments as corporate bonds, debentures, notes, commercial paper, short-term notes, medium-term notes and variable rate notes.

The Portfolio invests at least 80% of its net assets (plus any borrowings for investment purposes) in emerging and frontier markets securities. This strategy is not fundamental, but should the Portfolio decide to change this strategy, it will provide shareholders with at least 60 days’ prior written notice.

The Portfolio also may invest in derivatives, including forward foreign currency exchange contracts and equity derivative securities such as participation notes; options on common stocks; and options, futures and options on futures on foreign common stock indices. Because some emerging market countries do not permit foreigners to participate directly in their securities markets or otherwise present difficulties for efficient foreign investment, the Portfolio may use equity derivative securities, and, in particular, participation notes, to gain exposure to those countries.

Principal Risks

The Portfolio is subject to numerous risks, any of which could cause an investor to lose money. The principal risks of the Portfolio are as follows:

• Market Risk:  Investments in the Portfolio may lose value due to a general downturn in stock markets.

• Currency Risk:  Foreign currencies may experience steady or sudden devaluation relative to the U.S. dollar, adversely affecting the value of the Portfolio’s investments. Because the Portfolio’s net asset value is determined on the basis of U.S. dollars, if the local currency of a foreign market depreciates against the U.S. dollar, you may lose money even if the foreign market prices of the Portfolio’s holdings rise.

• Foreign Investment Risk:  Securities issued by foreign entities involve risks not associated with U.S. investments. These risks include additional taxation, political, economic, social or diplomatic instability, and the above-mentioned possibility of changes in foreign currency exchange rates. There may also be less publicly-available information about a foreign issuer.

• Emerging and Frontier Market Risk:  Emerging and frontier market securities involve unique risks, such as exposure to economies less diverse and mature than that of the U.S. or more established foreign markets. Economic or political instability may cause larger price changes in emerging or frontier market securities than in securities of issuers based in more developed foreign countries.

• Debt Securities Risk:  Debt securities may lose value due to unfavorable fluctuations in the level of interest rates or due to a decline in the creditworthiness of the issuer. As interest rates rise, the value of debt securities declines. This risk is generally greater for debt securities with longer maturities than for debt securities with shorter maturities.

• Participation Notes Risk:  Participation notes are designed to replicate the return of a particular underlying equity or debt security, currency or market. Participation notes involve the same risks associated with a direct investment in the underlying security, currency, or market. In addition, participation notes involve counterparty risk, because the Portfolio has no rights against the issuer(s) of the underlying security(ies) and must rely on the creditworthiness of the issuer of the participation note.

Portfolio Performance

The bar chart below shows how the Portfolio’s investment results have varied from year to year. The table that follows shows how the Advisor Class average annual total returns compare with a broad measure of market performance. Together these provide an indication of the risks of investing in the Portfolio. How the Advisor Class of the Portfolio has performed in the past (before and after taxes) is not necessarily an indication of how it will perform in the future.

Updated Portfolio performance information is available at www.hardingloevnerfunds.com or by calling (877) 435-8105.

Emerging Markets Portfolio

The best calendar quarter return during the period shown above was 32.85% in the 2nd quarter of 2009; the worst was -27.99% in the 4th quarter of 2008.

Average Annual Total Returns
(for the periods ended December 31, 2012)

Average Annual Total Returns Advisor Harding Loevner Emerging Markets Portfolio		1-Year	5-Year	10-Year
Advisor Class		22.73%	(0.93%)	16.65%
Advisor Class Return After Taxes on Distributions	[1]	21.49%	(1.21%)	16.40%
Advisor Class Return After Taxes on Distributions and Sale of Portfolio Shares	[1]	16.43%	(0.77%)	15.24%
MSCI Emerging Markets (net) Index (reflects no deduction for fees, expenses, or taxes)		18.23%	(0.92%)	16.51%

[1] Expense information in this table has been restated to reflect current fees. Therefore, the expenses in this table will not correlate to the expenses shown in the Financial Highlights of the Portfolio.

[2] Harding Loevner LP has contractually agreed to waive a portion of its management fee and/or reimburse the Portfolio for its other operating expenses to the extent Total Annual Portfolio Operating Expenses, as a percentage of average daily net assets, exceed 1.75% through February 28, 2014.

[1] After-tax returns in the table above are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. In some cases, the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Portfolio shares at the end of the measurement period. Actual after-tax returns depend on an investor's tax situation and may differ from those shown, and after-tax returns shown are not relevant to investors who hold their Portfolio shares through tax-deferred arrangements, such as 401(k) plans or Individual Retirement Accounts.