UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

(Mark One)

For the quarterly period ended April 30, 2008.

or

For the transition period from              to             .

Commission file number 1-6991

WAL-MART STORES, INC.

(Exact name of registrant as specified in its charter)

(479) 273-4000

(Registrant’s telephone number, including area code)

Not applicable

(Former name, former address and former fiscal year, if changed since last report)

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or such shorter periods that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes  x    No  ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer or a smaller reporting company. See definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act. Check One:

Large Accelerated Filer  x    Accelerated Filer  ¨    Non-Accelerated Filer  ¨    Smaller Reporting Company  ¨

Indicate by a check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).    Yes  ¨    No  x

Applicable Only to Corporate Issuers

Indicate the number of shares outstanding of each of the issuer’s classes of common stock, as of the latest practical date.

Common Stock, $.10 Par Value – 3,943,722,061 shares as of June 2, 2008.

PART I. FINANCIAL INFORMATION

WAL-MART STORES, INC.

CONDENSED CONSOLIDATED STATEMENTS OF INCOME

(Unaudited)

(Amounts in millions except per share data)

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WAL-MART STORES, INC.

CONDENSED CONSOLIDATED BALANCE SHEETS

(Unaudited)

(Amounts in millions)

3

WAL-MART STORES, INC.

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(Unaudited)

(Amounts in millions)

4

WAL-MART STORES, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

NOTE 1. Basis of Presentation

The Condensed Consolidated Balance Sheets of Wal-Mart Stores, Inc. and its subsidiaries (the “Company”) as of April 30, 2008 and 2007, and the related Condensed Consolidated Statements of Income and Condensed Consolidated Statements of Cash Flows for the three-month periods ended April 30, 2008 and 2007, are unaudited. The Condensed Consolidated Balance Sheet as of January 31, 2008, is derived from the audited financial statements at that date.

In the opinion of management, all adjustments necessary for a fair presentation of the condensed consolidated financial statements have been included. Such adjustments are of a normal recurring nature. Interim results are not necessarily indicative of results for a full year.

The condensed consolidated financial statements and notes thereto are presented in accordance with the rules and regulations of the Securities and Exchange Commission and do not contain certain information included in the Company’s Annual Report to Shareholders for the fiscal year ended January 31, 2008. Therefore, the interim condensed consolidated financial statements should be read in conjunction with that Annual Report to Shareholders.

NOTE 2. Net Income Per Common Share

Basic net income per common share is based on the weighted-average number of outstanding common shares. Diluted net income per common share is based on the weighted-average number of outstanding shares adjusted for the dilutive effect of stock options and other share-based awards. The dilutive effect of stock options and other share-based awards was 10 million and 6 million shares in the first quarter of fiscal 2009 and 2008, respectively. The Company had approximately 25 million and 54 million option shares outstanding at April 30, 2008 and 2007, respectively, which were not included in the diluted net income per share calculation because their effect would be antidilutive.

NOTE 3. Inventories

The Company values inventories at the lower of cost or market as determined primarily by the retail method of accounting, using the last-in, first-out (“LIFO”) method for substantially all of the Wal-Mart Stores segment’s merchandise inventories. The Sam’s Club segment’s merchandise and merchandise in our distribution warehouses are valued based on the weighted-average cost using the LIFO method. Inventories of foreign operations are primarily valued by the retail method of accounting, using the first-in, first-out (“FIFO”) method. At April 30, 2008 and 2007, our inventories valued at LIFO approximate those inventories as if they were valued at FIFO.

NOTE 4. Significant Long-term Debt Transactions

During the first three months of fiscal 2009, the Company issued $1.0 billion of 4.250% Notes Due 2013 and $1.5 billion of 6.200% Notes Due 2038. Beginning on October 15, 2008, the Company will pay interest on the notes of each series on April 15 and October 15 of each year. Interest started accruing on such notes on April 15, 2008. The 2013 notes will mature on April 15, 2013 and the 2038 notes will mature on April 15, 2038.

NOTE 5. Fair Value Measurements

In September 2006, the Financial Accounting Standards Board (“FASB”) issued Statement of Financial Accounting Standards No. 157, “Fair Value Measurements” (“SFAS 157”). SFAS 157 defines fair value, establishes a framework for measuring fair value within generally accepted accounting principles and expands required disclosures about fair value measurements. In November 2007, the FASB provided a one year deferral for the implementation of SFAS 157 for nonfinancial assets and liabilities. The Company adopted SFAS 157 on February 1, 2008, as required. The adoption of SFAS 157 did not have a material impact on the Company’s financial condition and results of operations.

SFAS 157 establishes a three–tier fair value hierarchy, which prioritizes the inputs used in measuring fair value. These tiers include: Level 1, defined as observable inputs such as quoted prices in active markets; Level 2, defined as inputs other than quoted

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prices in active markets that are either directly or indirectly observable; and Level 3, defined as unobservable inputs in which little or no market data exists, therefore requiring an entity to develop its own assumptions. As of April 30, 2008, the Company held certain derivative asset and liability positions that are required to be measured at fair value on a recurring basis. The majority of the Company’s derivative instruments related to receive fixed-rate, pay floating rate interest rate swaps and receive fixed-rate, pay fixed-rate cross-currency interest rate swaps. The fair values of these interest rate swaps have been measured in accordance with Level 2 inputs in the fair value hierarchy, and as of April 30, 2008, are as follows (asset/(liability)):

In February 2007, the FASB issued Statement of Financial Accounting Standards No. 159, “The Fair Value Option for Financial Assets and Financial Liabilities–Including an amendment of FASB Statement No. 115” (“SFAS 159”). SFAS 159 permits companies to measure many financial instruments and certain other items at fair value at specified election dates. The Company adopted SFAS 159 on February 1, 2008. Since the Company has not utilized the fair value option for any allowable items, the adoption of SFAS 159 did not have a material impact on the Company’s financial condition and results of operations.

NOTE 6. Segments

The Company is engaged in the operations of retail stores located in all 50 states of the United States, Argentina, Brazil, Canada, Puerto Rico and the United Kingdom and through majority-owned subsidiaries in Central America, Japan and Mexico. The Company operates in China and India through joint ventures. The Company identifies segments in accordance with the criteria set forth in Statement of Financial Accounting Standards No. 131, “Disclosures about Segments of an Enterprise and Related Information” and is primarily based on the operations of the Company that our chief operating decision maker regularly reviews to analyze performance and allocate resources among business units of the Company.

The Wal-Mart Stores segment includes the Company’s mass merchant concept in the United States under the Wal-Mart brand, as well as walmart.com. The Sam’s Club segment includes the warehouse membership clubs in the United States, as well as samsclub.com. The International segment consists of the Company’s operations outside of the fifty United States. The amounts under the caption “Other” in the table below relating to operating income are unallocated corporate overhead items.

The Company measures the profit of its segments as “segment operating income,” which is defined as income before net interest expense, income taxes and minority interest and excludes unallocated corporate overhead. At February 1, 2008, the Company reclassified certain unallocated corporate expenses to be included within each segment’s measurement of operating income. As a result, all prior year measurements of segment operating income have been restated for comparative purposes.

Net sales by operating segment were as follows (amounts in millions):

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Segment operating income and the reconciliation to income before income taxes and minority interest are as follows (amounts in millions):