Mutual Fund Summary Prospectus (497k)

Vanguard Pacific Stock Index Fund Summary Prospectus

February 27, 2020

Investor Shares & Admiral™ Shares

Vanguard Pacific Stock Index Fund Investor Shares (VPACX)

Vanguard Pacific Stock Index Fund Admiral Shares (VPADX)

The Fund's statutory Prospectus and Statement of Additional Information dated February 27, 2020, as may be amended or supplemented, are incorporated into and made part of this Summary Prospectus by reference.

Before you invest, you may want to review the Fund's Prospectus, which contains more information about the Fund and its risks. You can find the Fund's Prospectus and other information about the Fund online at www.vanguard.com/prospectus. You can also obtain this information at no cost by calling 800-662-7447 or by sending an email request to [e-mail].

See the inside front cover for important information about access to your fund's annual and semiannual shareholder reports.

The Securities and Exchange Commission (SEC) has not approved or disapproved these securities or passed upon the adequacy of this prospectus. Any representation to the contrary is a criminal offense.

Important information about access to shareholder reports

Beginning on January 1, 2021, as permitted by regulations adopted by the SEC, paper copies of your fund's annual and semiannual shareholder reports will no longer be sent to you by mail, unless you specifically request them. Instead, you will be notified by mail each time a report is posted on the website and will be provided with a link to access the report.

If you have already elected to receive shareholder reports electronically, you will not be affected by this change and do not need to take any action. You may elect to receive shareholder reports and other communications from the fund electronically by contacting your financial intermediary (such as a broker-dealer or bank) or, if you invest directly with the fund, by calling Vanguard at one of the phone numbers on the back cover of this prospectus or by logging on to vanguard.com.

You may elect to receive paper copies of all future shareholder reports free of charge. If you invest through a financial intermediary, you can contact the intermediary to request that you continue to receive paper copies. If you invest directly with the fund, you can call Vanguard at one of the phone numbers on the back cover of this prospectus or log on to vanguard.com. Your election to receive paper copies will apply to all the funds you hold through an intermediary or directly with Vanguard.

Investment Objective

The Fund seeks to track the performance of a benchmark index that measures the investment return of stocks issued by companies located in the major markets of the Pacific region.

Fees and Expenses

The following table describes the fees and expenses you may pay if you buy and hold Investor Shares or Admiral Shares of the Fund.

Shareholder Fees

(Fees paid directly from your investment)

	Investor Shares	Admiral Shares
Sales Charge (Load) Imposed on Purchases	None	None
Purchase Fee	None	None
Sales Charge (Load) Imposed on Reinvested Dividends	None	None
Redemption Fee	None	None
Account Service Fee (for certain fund account balances below	$20/year	$20/year
$10,000)

1

Annual Fund Operating Expenses

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

	Investor Shares	Admiral Shares
Management Fees	0.21%	0.09%
12b-1 Distribution Fee	None	None
Other Expenses	0.02%	0.01%
Total Annual Fund Operating Expenses	0.23%	0.10%

Examples

The following examples are intended to help you compare the cost of investing in the Fund's Investor Shares or Admiral Shares with the cost of investing in other mutual funds. They illustrate the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund's shares. These examples assume that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

	1 Year	3 Years	5 Years	10 Years
Investor Shares	$24	$74	$130	$293
Admiral Shares	$10	$32	$56	$128

Portfolio Turnover

The Fund 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 more taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the previous expense examples, reduce the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 4% of the average value of its portfolio.

2

Principal Investment Strategies

The Fund employs an indexing investment approach by investing all, or substantially all, of its assets in the common stocks included in the FTSE Developed Asia Pacific All Cap Index. The FTSE Developed Asia Pacific All Cap Index is a market-capitalization-weighted index that is made up of approximately 2,313 common stocks of large-, mid-, and small-cap companies located in Japan, Korea, Australia, Hong Kong, Singapore, and New Zealand.

Principal Risks

An investment in the Fund could lose money over short or long periods of time. You should expect the Fund's share price and total return to fluctuate within a wide range. The Fund is subject to the following risks, which could affect the Fund's performance:

•Stock market risk, which is the chance that stock prices overall will decline. Stock markets tend to move in cycles, with periods of rising prices and periods of falling prices. The Fund's investments in foreign stocks can be riskier than U.S. stock investments. Foreign stocks may be more volatile and less liquid than U.S. stocks. The prices of foreign stocks and the prices of U.S. stocks may move in opposite directions. In addition, the Fund's target index may, at times, become focused in stocks of a particular market sector, which would subject the Fund to proportionately higher exposure to the risks of that sector.

•Country/regional risk, which is the chance that world events—such as political upheaval, financial troubles, or natural disasters—will adversely affect the value of securities issued by companies in foreign countries or regions. The Index's, and therefore the Fund's, heavy exposure to Japan, Australia, and Korea subjects the Fund to a higher degree of country risk than that of more geographically diversified international funds.

•Currency risk, which is the chance that the value of a foreign investment, measured in U.S. dollars, will decrease because of unfavorable changes in currency exchange rates.

An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

3

Annual Total Returns

The following bar chart and table are intended to help you understand the risks of investing in the Fund. Because the eligibility requirements for the Fund's Admiral Shares were recently changed, annual total returns for the Fund's Admiral Shares are relevant for most investors. Accordingly, the information presented in the bar chart reflects the performance of the Fund's Admiral Shares. The bar chart shows how the performance of the Fund's Admiral Shares has varied from one calendar year to another over the periods shown. The table shows how the average annual total returns of the share classes presented compare with those of the Fund's target index and other comparative indexes, which have investment characteristics similar to those of the Fund. The Spliced Pacific Stock Index reflects the performance of the MSCI Pacific Index through March 26, 2013; the FTSE Developed Asia Pacific Index through September 30, 2015; and the FTSE Developed Asia Pacific All Cap Index thereafter. Returns for the FTSE Indexes shown are adjusted for withholding taxes applicable to U.S.-based mutual funds organized as Delaware statutory trusts. Keep in mind that the Fund's past performance (before and after taxes) does not indicate how the Fund will perform in the future. Updated performance information is available on our website at vanguard.com/performance or by calling Vanguard toll-free at 800-662-7447.

Annual Total Returns — Vanguard Pacific Stock Index Fund Admiral Shares

	2010		2011		2012		2013		2014		2015		2016		2017		2018		2019
100%
80%
60%															28.62
40%	15.93				15.61		17.55												17.58
20%											2.43		5.29
0%
-20%			-13.89						-4.54								-13.89
-40%
-60%

During the periods shown in the bar chart, the highest return for a calendar quarter was 12.82% (quarter ended September 30, 2010), and the lowest return for a quarter was –13.49% (quarter ended September 30, 2011).

4

Average Annual Total Returns for Periods Ended December 31, 2019

	1 Year	5 Years	10 Years
Vanguard Pacific Stock Index Fund Admiral Shares
Return Before Taxes	17.58%	7.03%	6.16%
Return After Taxes on Distributions	16.76	6.32	5.47
Return After Taxes on Distributions and Sale of Fund Shares	10.93	5.41	4.84
Vanguard Pacific Stock Index Fund Investor Shares
Return Before Taxes	17.42%	6.88%	6.02%
Comparative Indexes
(reflect no deduction for fees or expenses)
FTSE Developed Asia Pacific All Cap Index	18.00%	7.07%	6.31%
FTSE Developed Asia Pacific Index	18.36	7.14	6.44
Spliced Pacific Stock Index	18.00	6.95	6.24
FTSE Developed Asia Pacific All Cap Fair Market Value Index	17.63	—	—

Actual after-tax returns depend on your tax situation and may differ from those shown in the preceding table. When after-tax returns are calculated, it is assumed that the shareholder was in the highest individual federal marginal income tax bracket at the time of each distribution of income or capital gains or upon redemption. State and local income taxes are not reflected in the calculations. Please note that after-tax returns are shown only for the Admiral Shares and may differ for each share class. After-tax returns are not relevant for a shareholder who holds fund shares in a tax- deferred account, such as an individual retirement account or a 401(k) plan. Also, figures captioned Return After Taxes on Distributions and Sale of Fund Shares may be higher than other figures for the same period if a capital loss occurs upon redemption and results in an assumed tax deduction for the shareholder.

Investment Advisor

The Vanguard Group, Inc. (Vanguard)

Portfolio Managers

Michael Perre, Principal of Vanguard. He has co-managed the Fund since 2016.

Jeffrey D. Miller, Portfolio Manager at Vanguard. He has co-managed the Fund since 2016.

5

Purchase and Sale of Fund Shares

You may purchase or redeem shares online through our website (vanguard.com), by mail (The Vanguard Group, P.O. Box 1110, Valley Forge, PA 19482-1110), or by telephone [phone]). The minimum investment amount required to open and maintain a Fund account for Admiral Shares is $3,000. The minimum investment amount required to add to an existing Fund account is generally $1. Investor Shares are generally available only to Vanguard funds that operate as funds of funds and to certain retirement plan clients that receive recordkeeping services from Vanguard. Financial intermediaries, institutional clients, and Vanguard-advised clients should contact Vanguard for information on special eligibility rules that may apply to them regarding Admiral Shares. If you are investing through an intermediary, please contact that firm directly for more information regarding your eligibility. If you are investing through an employer- sponsored retirement or savings plan, your plan administrator or your benefits office can provide you with detailed information on how you can invest through your plan.

Tax Information

The Fund's distributions may be taxable as ordinary income or capital gain. If you are investing through a tax-advantaged account, such as an IRA or an employer- sponsored retirement or savings plan, special tax rules apply.

Payments to Financial Intermediaries

The Fund and its investment advisor do not pay financial intermediaries for sales of Fund shares.

Vanguard Pacific Stock Index Fund Investor Shares—Fund Number 72

Vanguard Pacific Stock Index Fund Admiral Shares—Fund Number 572

London Stock Exchange Group companies include FTSE International Limited ("FTSE"), Frank Russell Company ("Russell"), MTS Next Limited ("MTS"), and FTSE TMX Global Debt Capital Markets Inc. ("FTSE TMX"). All rights reserved. "FTSE®", "Russell®", "MTS®", "FTSE TMX®" and "FTSE Russell" and other service marks and trademarks related to the FTSE or Russell indexes are trademarks of the London Stock Exchange Group companies and are used by FTSE, MTS, FTSE TMX and Russell under licence. All information is provided for information purposes only. Every effort is made to ensure that all information given in this publication is accurate, but no responsibility or liability can be accepted by the London Stock Exchange Group companies nor its licensors for any errors or for any loss from use of this publication. Neither the London Stock Exchange Group companies nor any of their licensors make any claim, prediction, warranty or representation whatsoever, expressly or impliedly, either as to the results to be obtained from the use of the Indices or the fitness or suitability of the Indices for any particular purpose to which they might be put. The London Stock Exchange Group companies do not provide investment advice and nothing in this document should be taken as constituting financial or investment advice. The London Stock Exchange Group companies make no representation regarding the advisability of investing in any asset. A decision to invest in any such asset should not be made in reliance on any information herein. Indexes cannot be invested in directly. Inclusion of an asset in an index is not a recommendation to buy, sell or hold that asset. The general information contained in this publication should not be acted upon without obtaining specific legal, tax, and investment advice from a licensed professional. No part of this information may be reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without prior written permission of the London Stock Exchange Group companies. Distribution of the London Stock Exchange Group companies' index values and the use of their indexes to create financial products require a licence with FTSE, FTSE TMX, MTS and/or Russell and/or its licensors.

To request additional information about the Fund, please visit vanguard.com or contact us at 800-662-7447.

© 2020 The Vanguard Group, Inc. All rights reserved. Vanguard Marketing Corporation, Distributor.

SP 72 022020