Putnam Asia Pacific
Equity Fund

Before you invest, you may wish to review the fund’s prospectus, which contains more information about the fund and its risks. You may obtain the prospectus and other information about the fund, including the statement of additional information (SAI) and most recent reports to shareholders, at no cost by visiting putnam.com/funddocuments, calling 1-800-225-1581, or e-mailing Putnam at funddocuments@putnam.com.

The fund’s prospectus and SAI, both dated 8/30/10, as supplemented from time to time, are incorporated by reference into this summary prospectus.

Goal

Putnam Asia Pacific Equity Fund seeks long-term capital appreciation.

Fees and expenses

The following table describes the fees and expenses you may pay if you buy and hold shares of the fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in Putnam funds. More information about these and other discounts is available from your financial advisor and in How do I buy fund shares beginning on page 14 of the fund’s prospectus and in How to buy shares beginning on page II-1 of the fund’s SAI.

Shareholder fees (fees paid directly from your investment)

		Maximum deferred
	Maximum sales	sales charge (load) (as
	charge (load)	a percentage of original
	imposed on purchases	purchase price or	Redemption fee (as
	(as a percentage of	redemption proceeds,	a percentage of total
Share class	offering price)	whichever is lower)	redemption proceeds)
Class A	5.75%	NONE*	1.00%
Class B	NONE	5.00%**	1.00%
Class C	NONE	1.00%	1.00%
Class M	3.50%	NONE*	1.00%
Class R	NONE	NONE	1.00%
Class Y	NONE	NONE	1.00%

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Annual fund operating expenses
(expenses you pay each year as a percentage of the value of your investment)***

				Total
				annual		Total annual fund
		Distribution		fund	Expense	operating expenses
	Manage-	and service	Other	operating	reim-	after expense
Share class	ment fees	(12b-1) fees	expenses	expenses	bursement	reimbursement
Class A	0.93%	0.25%	1.54%	2.72%	(0.98)%	1.74%
Class B	0.93%	1.00%	1.54%	3.47%	(0.98)%	2.49%
Class C	0.93%	1.00%	1.54%	3.47%	(0.98)%	2.49%
Class M	0.93%	0.75%	1.54%	3.22%	(0.98)%	2.24%
Class R	0.93%	0.50%	1.54%	2.97%	(0.98)%	1.99%
Class Y	0.93%	N/A	1.54%	2.47%	(0.98)%	1.49%

*A deferred sales charge of 1.00% on class A shares and of 0.65% on class M shares may be imposed on certain redemptions of shares bought without an initial sales charge.

** This charge is phased out over six years.

*** Restated to reflect projected expenses under a new management contract effective 1/1/2010 and a new expense arrangement, which gives effect to changes in the allocation of certain expenses among the Putnam funds and Putnam Management’s contractual obligation to limit certain fund expenses through 8/30/2011. This obligation may be modified or discontinued only with the approval of the Board of Trustees.

Example

The following hypothetical example is intended to help you compare the cost of investing in the fund with the cost of investing in other funds. It assumes that you invest $10,000 in the fund for the time periods indicated and then, except as indicated, redeem all your shares at the end of those periods. It assumes a 5% return on your investment each year and that the fund’s operating expenses remain the same. Only the first year of each period in the example takes into account the expense reimbursement described above. Your actual costs may be higher or lower.

Share class	1 year	3 years	5 years	10 years
Class A	$742	$1,283	$1,850	$3,383
Class B	$752	$1,274	$1,919	$3,514
Class B (no redemption)	$252	$974	$1,719	$3,514
Class C	$352	$974	$1,719	$3,683
Class C (no redemption)	$252	$974	$1,719	$3,683
Class M	$569	$1,219	$1,893	$3,684
Class R	$202	$826	$1,476	$3,220
Class Y	$152	$676	$1,227	$2,732

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Portfolio turnover

The fund pays transaction-related costs when it buys and sells securities (or “turns over” its portfolio). A higher turnover rate may indicate higher transaction costs and may result in higher taxes when the fund’s shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or the above example, affect fund performance. The fund’s turnover rate in the most recent fiscal year was 106%.

Investments, risks, and performance

Investments

We invest mainly in equity securities of Asian or Pacific Basin companies that we believe have favorable investment potential. We invest in equity securities (growth or value stocks or both) of companies of any size. We may consider, among other things, a company’s valuation, financial strength, competitive position in its industry, projected future earnings, cash flows and dividends when deciding whether to buy or sell equity investments. We may also use derivatives, such as futures, swaps, options, certain foreign currency transactions and warrants, for both hedging and non-hedging purposes and we may engage in short sales of securities.

Risks

It is important to understand that you can lose money by investing in the fund.

The prices of stocks in the fund’s portfolio may fall or fail to rise over extended periods of time, for a variety of reasons, including both general financial market conditions and factors related to a specific issuer or industry. These risks are usually greater for small and midsize companies. International investments traded in foreign currencies carry the risk of the adverse impact of exchange rates on values. International investments may carry risks associated with potentially less stable economies or governments, such as the risk of seizure by a foreign government, the imposition of currency or other restrictions, or high levels of inflation or deflation. Emerging-market securities can be illiquid. Investments in a single region may be affected by common economic forces and other factors. In addition, events in any one country within the region may impact the other countries or the region as a whole. Our use of derivatives may increase these risks by, for example, increasing

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investment exposure or, in the case of over-the-counter instruments, because of the potential inability to terminate or sell derivatives positions. Our use of short selling may result in losses if the securities appreciate in value.

The fund may not achieve its goal, and it is not intended to be a complete investment program. An investment in the fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Performance

Performance information will be available after the fund completes a full calendar year of operation.

Your fund’s management

Investment advisor

Putnam Investment Management, LLC

Portfolio manager

Timothy F. Edmonstone, Portfolio Manager, portfolio manager of the fund since 2009

Purchase and sale of fund shares

You can open an account, purchase and/or sell fund shares, or exchange them for shares of another Putnam fund by contacting your financial advisor or by calling Putnam Investor Services at 1-800-225-1581.

When opening an account, you must complete and mail a Putnam account application, along with a check made payable to the fund, to: Putnam Investor Services, P.O. Box 8383, Boston, MA 02266-8383. The minimum initial investment of $500 is currently waived, although Putnam reserves the right to reject initial investments under $500 at its discretion. There is no minimum for subsequent investments.

You can sell your shares back to the fund or exchange them for shares of another Putnam fund any day the New York Stock Exchange is open, either through your financial advisor or directly to the fund. Shares may be sold or exchanged by mail, by phone, or online at putnam.com. Some restrictions may apply.

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Tax information

The fund normally distributes any net investment income and any net realized capital gains annually. These distributions may be taxed as ordinary income or as capital gains, unless the shares are held through a qualified retirement plan.

Financial intermediary compensation

If you purchase the fund through a broker/dealer or other financial intermediary (such as a bank or financial advisor), the fund and its related companies may pay that intermediary for the sale of fund shares and related services. Please bear in mind that these payments may create a conflict of interest by influencing the broker/dealer or other intermediary to recommend the fund over another investment. Ask your advisor or visit your advisor’s Web site for more information.

Additional information, including performance, is available at putnam.com/funddocuments, by calling 1-800-225-1581, or by e-mailing Putnam at funddocuments@putnam.com.

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