AB INTERNATIONAL GROWTH FUND INC

AB INTERNATIONAL GROWTH FUND

INVESTMENT OBJECTIVE

The Fund's investment objective is long-term growth of capital.

FEES AND EXPENSES OF THE FUND

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. You may qualify for sales charge reductions if you and members of your family invest, or agree to invest in the future, at least $100,000 in AB Mutual Funds. More information about these and other discounts is available from your financial intermediary and in Investing in the Funds--Sales Charge Reduction Programs for Class A Shares on page 68 of this Prospectus, in Appendix B--Financial Intermediary Waivers and in Purchase of Shares--Sales Charge Reduction Programs for Class A Shares on page 129 of the Fund's Statement of Additional Information ("SAI").

You may be required to pay commissions and/or other forms of compensation to a broker for transactions in Advisor Class shares, which are not reflected in the tables or the examples below.

SHAREHOLDER FEES (fees paid directly from your investment)

Shareholder Fees - AB INTERNATIONAL GROWTH FUND INC	CLASS A SHARES		CLASS B SHARES		CLASS C SHARES		ADVISOR CLASS SHARES	CLASS R SHARES	CLASS K SHARES	CLASS I SHARES
Shareholder Fees Column [Text]			(NOT CURRENTLY OFFERED TO NEW INVESTORS)
Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)	4.25%		none		none		none	none	none	none
Maximum Deferred Sales Charge (Load) (as a percentage of offering price or redemption proceeds, whichever is lower)	none	[1]	4.00%	[2]	1.00%	[3]	none	none	none	none
Exchange Fee	none		none		none		none	none	none	none

ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses - AB INTERNATIONAL GROWTH FUND INC	CLASS A	CLASS B	CLASS C	ADVISOR CLASS	CLASS R	CLASS K	CLASS I
Management Fees	0.75%	0.75%	0.75%	0.75%	0.75%	0.75%	0.75%
Distribution and/or Service (12b-1) Fees	0.25%	1.00%	1.00%	none	0.50%	0.25%	none
Other Expenses: Transfer Agent	0.23%	0.31%	0.25%	0.23%	0.26%	0.20%	0.10%
Other Expenses	0.20%	0.20%	0.20%	0.20%	0.21%	0.21%	0.21%
Total Other Expenses	0.43%	0.51%	0.45%	0.43%	0.47%	0.41%	0.31%
Total Annual Fund Operating Expenses	1.43%	2.26%	2.20%	1.18%	1.72%	1.41%	1.06%

EXAMPLES

The Examples are intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Examples assume that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Examples also assume that your investment has a 5% return each year and that the Fund's operating expenses stay the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example - AB INTERNATIONAL GROWTH FUND INC - USD ($)	CLASS A	CLASS B	CLASS C	ADVISOR CLASS	CLASS R	CLASS K	CLASS I
After 1 Year	$ 564	$ 629	$ 323	$ 120	$ 175	$ 144	$ 108
After 3 Years	858	906	688	375	542	446	337
After 5 Years	1,173	1,210	1,180	649	933	771	585
After 10 Years	$ 2,065	$ 2,386	$ 2,534	$ 1,432	$ 2,030	$ 1,691	$ 1,294

For the share classes listed below, you would pay the following expenses if you did not redeem your shares at the end of the period:

Expense Example, No Redemption - AB INTERNATIONAL GROWTH FUND INC - USD ($)	CLASS B	CLASS C
After 1 Year	$ 229	$ 223
After 3 Years	706	688
After 5 Years	1,210	1,180
After 10 Years	$ 2,386	$ 2,534

PORTFOLIO TURNOVER

The Fund pays transaction costs, such as commissions, when it buys or sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These transaction costs, which are not reflected in the Annual Fund Operating Expenses or in the Examples, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 27% of the average value of its portfolio.

PRINCIPAL STRATEGIES

The Fund invests primarily in an international portfolio of equity securities of companies selected by the Adviser for their growth potential within various market sectors. Examples of the types of market sectors in which the Fund may invest include, but are not limited to, information technology (which includes telecommunications), health care, financial services, infrastructure, energy and natural resources, and consumer groups. The Adviser's growth analysts seek to identify companies or industries that other investors have underestimated earnings potential--for example, some hidden earnings driver (including, but not limited to, reduced competition, market share gain, better margin trend, increased customer base, or similar factors) that would cause a company to grow faster than market forecasts.

The Adviser allocates the Fund's investments among broad sector groups utilizing the fundamental company research conducted by its internal research staff, assessing the current and forecasted investment opportunities and conditions, as well as diversification and risk considerations. The Adviser may vary the percentage allocations among market sectors and may change the market sectors in which the Fund invests as companies' potential for growth within a sector matures and new trends for growth emerge.

The Fund invests, under normal circumstances, in the equity securities of companies located in at least three countries (and normally substantially more) other than the United States. The Fund invests in securities of companies in both developed and emerging market countries. Geographic distribution of the Fund's investments among countries or regions also will be a product of the stock selection process rather than a pre-determined allocation. The Fund may also invest in synthetic foreign equity securities, which are various types of warrants used internationally that entitle a holder to buy or sell underlying securities. The Adviser expects that normally the Fund's portfolio will tend to emphasize investments in larger capitalization companies, although the Fund may invest in smaller or medium capitalization companies.

The Fund may, at times, invest in shares of exchange-traded funds ("ETFs") in lieu of making direct investments in securities. ETFs may provide more efficient and economical exposure to the types of companies and geographic locations in which the Fund seeks to invest than direct investments.

Currencies can have a dramatic impact on equity returns, significantly adding to returns in some years and greatly diminishing them in others. Currency and equity positions are evaluated separately. The Adviser may seek to hedge the currency exposure resulting from securities positions when it finds the currency exposure unattractive. To hedge all or a portion of its currency risk, the Fund may, from time to time, invest in currency-related derivatives, including forward currency exchange contracts, futures contracts, options on futures contracts, swaps and options. The Adviser may also seek investment opportunities by taking long or short positions in currencies through the use of currency-related derivatives.

The Fund may enter into other derivatives transactions, such as options, futures contracts, forwards, and swaps. The Fund may use options strategies involving the purchase and/or writing of various combinations of call and/or put options, including on individual securities and stock indices, futures contracts (including futures contracts on individual securities and stock indices) or shares of ETFs. These transactions may be used, for example, in an effort to earn extra income, to adjust exposure to individual securities or markets, or to protect all or a portion of the Fund's portfolio from a decline in value, sometimes within certain ranges.

PRINCIPAL RISKS

• MARKET RISK: The value of the Fund's assets will fluctuate as the stock or bond market fluctuates. The value of its investments may decline, sometimes rapidly and unpredictably, simply because of economic changes or other events that affect large portions of the market. It includes the risk that a particular style of investing, such as growth, may underperform the market generally.

• FOREIGN (NON-U.S.) RISK: Investments in securities of non-U.S. issuers may involve more risk than those of U.S. issuers. These securities may fluctuate more widely in price and may be less liquid due to adverse market, economic, political, regulatory or other factors.

• EMERGING MARKET RISK: Investments in emerging market countries may have more risk because the markets are less developed and less liquid as well as being subject to increased economic, political, regulatory or other uncertainties.

• CURRENCY RISK: Fluctuations in currency exchange rates may negatively affect the value of the Fund's investments or reduce its returns.

• CAPITALIZATION RISK: Investments in small- and mid-capitalization companies may be more volatile than investments in large-capitalization companies. Investments in small-capitalization companies may have additional risks because these companies have limited product lines, markets or financial resources.

• DERIVATIVES RISK: Derivatives may be illiquid, difficult to price, and leveraged so that small changes may produce disproportionate losses for the Fund, and may be subject to counterparty risk to a greater degree than more traditional investments.

• SECTOR RISK: The Fund may have more risk because of concentrated investments in a particular market sector, such as the technology or financial services sector. Market or economic factors affecting that sector could have a major effect on the value of the Fund's investments.

• MANAGEMENT RISK: The Fund is subject to management risk because it is an actively-managed investment fund. The Adviser will apply its investment techniques and risk analyses in making investment decisions for the Fund, but there is no guarantee that its techniques will produce the intended results.

As with all investments, you may lose money by investing in the Fund.

BAR CHART AND PERFORMANCE INFORMATION

The bar chart and performance information provide an indication of the historical risk of an investment in the Fund by showing:

• how the Fund's performance changed from year to year over ten years; and

• how the Fund's average annual returns for one, five and ten years compare to those of a broad-based securities market index.

You may obtain updated performance information on the Fund's website at www.abfunds.com (click on "Investments--Mutual Funds").

The Fund's past performance before and after taxes, of course, does not necessarily indicate how it will perform in the future.

BAR CHART

The annual returns in the bar chart are for the Fund's Class A shares and do not reflect sales loads. If sales loads were reflected, returns would be less than those shown. Through September 30, 2017, the year-to-date unannualized return for Class A shares was 30.94%.

During the period shown in the bar chart, the Fund's:

BEST QUARTER WAS UP 24.65%, 2ND QUARTER, 2009; AND WORST QUARTER WAS DOWN -27.28%, 3RD QUARTER, 2008.

PERFORMANCE TABLE
AVERAGE ANNUAL TOTAL RETURNS

(For the periods ended December 31, 2016)

Average Annual Total Returns - AB INTERNATIONAL GROWTH FUND INC		1 YEAR	5 YEARS	10 YEARS
CLASS A	[1]	(11.05%)	2.34%	(1.33%)
CLASS A | Return After Taxes on Distributions	[1]	(11.22%)	2.27%	(1.58%)
CLASS A | Return After Taxes on Distributions and Sale of Fund Shares	[1]	(6.12%)	1.86%	(0.82%)
CLASS B		(11.59%)	2.43%	(1.50%)
CLASS C		(8.80%)	2.46%	(1.63%)
ADVISOR CLASS		(6.94%)	3.51%	(0.62%)
CLASS R		(7.40%)	2.96%	(1.16%)
CLASS K		(7.13%)	3.27%	(0.86%)
CLASS I		(6.81%)	3.69%	(0.47%)
MSCI ACWI Index (ex. U.S.) (Net) (reflects no deduction for fees, expenses, or taxes except the reinvestment of dividends of non-U.S. withholding taxes)		4.50%	5.00%	0.96%

[1] Purchases of Class A shares in amounts of $1,000,000 or more, or by certain group retirement plans, may be subject to a 1%, 1-year contingent deferred sales charge, or CDSC, which may be subject to waiver in certain circumstances.

[2] Class B shares automatically convert to Class A shares after eight years. The CDSC decreases over time. For Class B shares, the CDSC decreases 1.00% annually to 0% after the fourth year.

[3] For Class C shares, the CDSC is 0% after the first year. Class C shares automatically convert to Class A shares after ten years.

[1] After-tax returns: -Are shown for Class A shares only and will vary for the other Classes of shares because these Classes have different expense ratios; -Are an estimate, which is based on the highest historical individual federal marginal income tax rates, and do not reflect the impact of state and local taxes; actual after-tax returns depend on an individual investor's tax situation and are likely to differ from those shown; and -Are not relevant to investors who hold fund shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts.