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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

(Mark One)

For the quarterly period ended September 30, 2007

OR

For the transition period from                      to                     

Commission file number: 000-50726

Google Inc.

(Exact name of registrant as specified in its charter)

1600 Amphitheatre Parkway

Mountain View, CA 94043

(Address of principal executive offices)

(Zip Code)

(650) 253-0000

(Registrant’s telephone number, including area code)

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 for such shorter period 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, or a non-accelerated filer. See definition of “accelerated filer and large accelerated filer” in Rule 12b-2 of the Exchange Act. (Check one):

Large accelerated filer  x             Accelerated filer  ¨             Non-accelerated filer  ¨

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

At October 31, 2007, there were 235,493,174 shares of Google’s Class A common stock outstanding and 77,347,311 shares of Google’s Class B common stock outstanding.

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GOOGLE INC.

INDEX

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PART I—FINANCIAL INFORMATION

GOOGLE INC.

CONSOLIDATED BALANCE SHEETS

(in thousands, except par value)

See accompanying notes.

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GOOGLE INC.

CONSOLIDATED STATEMENTS OF INCOME

(in thousands, except per share amounts)

See accompanying notes.

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GOOGLE INC.

CONSOLIDATED STATEMENTS OF CASH FLOWS

(in thousands)

See accompanying notes.

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GOOGLE INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

Note 1. Google Inc. and Summary of Accounting Policies

Nature of Operations

We were incorporated in California in September 1998. We were re-incorporated in the State of Delaware in August 2003. We provide highly targeted advertising and global internet search solutions as well as intranet solutions via an enterprise search appliance.

Basis of Consolidation

The Consolidated Financial Statements include the accounts of Google and our wholly-owned subsidiaries. All intercompany balances and transactions have been eliminated.

Unaudited Interim Financial Information

The accompanying Consolidated Balance Sheet as of September 30, 2007, the Consolidated Statements of Income for the three and nine months ended September 30, 2006 and 2007, and the Consolidated Statements of Cash Flows for the nine months ended September 30, 2006 and 2007 are unaudited. These unaudited interim Consolidated Financial Statements have been prepared in accordance with U.S. generally accepted accounting principles. In our opinion, the unaudited interim Consolidated Financial Statements include all adjustments of a normal recurring nature necessary for the fair presentation of our financial position as of September 30, 2007, our results of operations for the three and nine months ended September 30, 2006 and 2007, and our cash flows for the nine months ended September 30, 2006 and 2007. The results of operations for the three and nine months ended September 30, 2007 are not necessarily indicative of the results to be expected for the year ending December 31, 2007.

These unaudited interim Consolidated Financial Statements should be read in conjunction with the consolidated financial statements and related notes included in our 2006 Annual Report on Form 10-K filed on March 1, 2007.

Use of Estimates

The preparation of interim Consolidated Financial Statements in conformity with accounting principles generally accepted in the United States requires us to make estimates and assumptions that affect the amounts reported and disclosed in the financial statements and the accompanying notes. Actual results could differ materially from these estimates. On an ongoing basis, we evaluate our estimates, including those related to accounts receivable, fair values of marketable and non-marketable securities, fair values of intangible assets and goodwill, useful lives of intangible assets and property and equipment, fair values of options to purchase our common stock, traffic acquisition costs, and income taxes, among others. We base our estimates on historical experience and on various other assumptions that are believed to be reasonable, the results of which form the basis for making judgments about the carrying values of assets and liabilities. We engage third-party valuation consultants to assist management in the allocation of the purchase price of significant acquisitions.

Effect of Recent Accounting Pronouncements

In September 2006, the Financial Accounting Standards Board (FASB) issued Statement of Financial Accounting Standards (SFAS) No. 157, Fair Value Measurements, which defines fair value, establishes a framework for measuring fair value in generally accepted accounting principles, and expands disclosures about fair value measurements. SFAS No. 157 does not require any new fair value measurements, but provides guidance on how to measure fair value by providing a fair value hierarchy used to classify the source of the information. This statement is effective for us beginning January 1, 2008. We are currently evaluating the impact of the adoption of SFAS No. 157 on our financial statements.

In February 2007, the FASB issued SFAS No. 159, The Fair Value Option for Financial Assets and Financial Liabilities- including an Amendment of FASB Statement No. 115, which allows an entity to choose to measure certain financial instruments and liabilities at fair value. Subsequent measurements for the financial instruments and liabilities an entity elects to fair value will be recognized in earnings. SFAS No. 159 also establishes additional disclosure requirements. SFAS No. 159 is effective for fiscal years beginning after November 15, 2007, with early adoption permitted provided that the entity also adopts SFAS No. 157. We are currently evaluating whether to adopt SFAS No. 159 and, if adopted, the impact of such adoption.

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Note 2. Net Income per Share of Class A and Class B common stock

The following table sets forth the computation of basic and diluted net income per share of Class A and Class B common stock (in thousands, except per share amounts, unaudited):