Anheuser-Busch Companies (BUD)

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 20-F/A

(Amendment No. 1)

(Mark One)

OR

For the fiscal year ended 31 December 2010

OR

OR

Anheuser-Busch InBev SA/NV

(Exact name of Registrant as specified in its charter)

N/A

(Translation of Registrant’s name into English)

Belgium

(Jurisdiction of incorporation or organization)

Brouwerijplein 1,

3000 Leuven, Belgium

(Address of principal executive offices)

Sabine Chalmers

Chief Legal and Corporate Affairs Officer

Brouwerijplein 1, 3000 Leuven

Belgium

Telephone No.: + 32 16 27 61 11

Fax No.: + 32 16 50 61 11

(Name, Telephone, E-mail and/or Facsimile number and Address of Company Contact Person)

Securities registered or to be registered pursuant to Section 12(g) of the Act.

None

(Title of Class)

Securities for which there is a reporting obligation pursuant to Section 15(d) of the Act.

None

(Title of Class)

Indicate the number of outstanding shares of each of the issuer’s classes of capital or common stock as of the close of the period covered by the annual report.    1,605,183,954 ordinary shares

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.    x  Yes    ¨  No

If this report is an annual or transition report, indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934.    ¨  Yes    x  No

Note – Checking the box above will not relieve any registrant required to file reports pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 from their obligations under those Sections.

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.    x  Yes    ¨  No

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).*    ¨  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):

Indicate by check mark which basis of accounting the registrant has used to prepare the financial statements included in this filing:

If “Other” has been checked in response to the previous question, indicate by check mark which financial statement item the registrant has elected to follow.     x  N/A    ¨  Item 17     ¨  Item 18

If this is an annual report, indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).    ¨  Yes    x  No

(APPLICABLE ONLY TO ISSUERS INVOLVED IN BANKRUPTCY PROCEEDINGS DURING THE PAST FIVE YEARS)

Indicate by check mark whether the registrant has filed all documents and reports required to be filed by Section 12, 13 or

15(d) of the Securities Exchange Act of 1934 subsequent to the distribution of securities under a plan confirmed by a court.    x  N/A    ¨  Yes     ¨  No

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EXPLANATORY NOTE

This Amendment No. 1 to Form 20-F (the “Form 20-F/A”) amends our annual report on Form 20-F for the fiscal year ended 31 December 2010, which was originally filed with the U.S. Securities and Exchange Commission on April 13, 2011 (the “Form 20-F”). The purpose of this Form 20-F/A is to amend the Form 20-F to update the Section 302 certifications of our CEO and CFO to include the internal control over financial reporting language which we were allowed to exclude in our first annual report as an SEC registered company for the fiscal year ended 31 December 2009.

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The registrant hereby certifies that it meets all of the requirements for filing on Form 20-F and that it has duly caused and authorized the undersigned to sign this 20-F/A on its behalf.