UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-K/A

ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE

SECURITIES EXCHANGE ACT OF 1934

FOR THE FISCAL YEAR ENDED DECEMBER 31, 2012

Commission File No. 001-34061

HSN, INC.

(Exact name of registrant as specified in its charter)

(727) 872-1000

(Registrant’s telephone number, including area code)

Securities registered pursuant to Section 12(b) of the Act:

Securities registered pursuant to Section 12(g) of the Act: None

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

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.    Yes  ¨    No  x

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 has submitted electronically and posted on its corporate Website, if any, an Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registration was required to submit and post such files).    Yes  x    No  ¨

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of the registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K.  x

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer or a smaller reporting company as defined 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

The aggregate market value of the registrant’s outstanding common stock held by non-affiliates as of June 30, 2012 (the registrant’s most recently completed second fiscal quarter), was $1,417,624,297 (based on a closing price of $40.35 per share for the registrant’s common stock on the NASDAQ Global Select Market).

As of February 21, 2013, the registrant had 55,082,030 shares of common stock, $0.01 par value per share, outstanding.

DOCUMENTS INCORPORATED BY REFERENCE

Portions of the definitive Proxy Statement for the 2013 Annual Meeting of Shareholders to be filed with the U.S. Securities and Exchange Commission no later than 120 days after the end of the registrant’s 2012 fiscal year end are incorporated by reference into Items 10, 11, 12, 13 and 14 of Part III of this Form 10-K.

EXPLANATORY NOTE

This Form 10-K/A is being filed as Amendment No. 1 to the Form 10-K of HSN, Inc. filed with the U.S. Securities and Exchange Commission on February 21, 2013 for the purpose of amending the Consent of Independent Registered Certified Public Accounting Firm to provide the name and electronic signature of Ernst & Young LLP and correct an incorrect date reference. There are no other changes to the consent.

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SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

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