United States

Securities and Exchange Commission

Washington, D.C. 20549

Form 10-Q/A

(Amendment No. 1)

For the quarterly period ended June 30, 2011

OR

Commission File Number 0-27517

GAIAM, INC.

(Exact name of registrant as specified in its charter)

833 WEST SOUTH BOULDER ROAD,

LOUISVILLE, COLORADO 80027

(Address of principal executive offices)

(303) 222-3600

(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 and 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 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, 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.:

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

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

EXPLANATORY NOTE

The purpose of this amendment on Form 10-Q/A to Gaiam, Inc.’s quarterly report on Form 10-Q for the period ended June 30, 2011, filed with the Securities and Exchange Commission on August 9, 2011 (the “Form 10-Q”), is solely to furnish Exhibit 101 to the Form 10-Q, as required by Rule 405 of Regulation S-T.

No other changes have been made to the Form 10-Q. This Form 10-Q/A speaks as of the original filing date of the Form 10-Q, does not reflect events that may have occurred subsequent to the original filing date, and does not modify or update in any way disclosures made in Form 10-Q.

Pursuant to Rule 406T of Regulation S-T, the interactive data file included as Exhibit 101 hereto is deemed not filed or part of a registration statement or prospectus for purposes of sections 11 or 12 of the Securities Act of 1933, as amended, is deemed not filed for purposes of section 18 of the Securities Exchange Act of 1934, as amended, and otherwise is not subject to liability under those sections.

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Signatures

In accordance with the requirements of the Securities and Exchange Act, the registrant caused this report to be signed on its behalf, by the undersigned, thereunto duly authorized.

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