UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-K/A

(Amendment No. 2)

For the fiscal year ended December 31, 2011

or

For the transition period from              to             

Commission File Number 0-23081

FARO TECHNOLOGIES, INC.

(Exact name of Registrant as Specified in Its Charter)

(Registrant’s telephone number, including area code): (407) 333-9911

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 Exchange 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 Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§ 229.405 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 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 registrant’s knowledge, in definite 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. See definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act. (Check one):

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

The aggregate market value of the Registrant’s common stock held by non-affiliates of the Registrant on July 1, 2011, the last business day of the registrant’s most recently completed second fiscal quarter (for the period covered by this report), was approximately $708 million (based on the last sale on such date on the NASDAQ Global Select Market).

As of July 27, 2012, there were outstanding 16,946,323 shares of the Registrant’s common stock.

DOCUMENTS INCORPORATED BY REFERENCE

Portions of the Registrant’s proxy statement for the 2012 Annual Meeting of Shareholders are incorporated by reference in Part III of this Annual Report on Form 10-K.

EXPLANATORY NOTE

FARO Technologies, Inc. (the “Company”) is filing this Amendment No. 2 on Form 10-K/A (this “Amendment No. 2”) to amend its Annual Report on Form 10-K for the fiscal year ended December 31, 2011 (the “Form 10-K”), as filed with the Securities and Exchange Commission (the “Commission”) on February 28, 2012, and as amended by Amendment No. 1 filed with the Commission on March 28, 2012 (“Amendment No. 1”). This Amendment No. 2 is being filed solely for the purpose of correcting a typographical error in Exhibit 23.1, Consent of Grant Thornton LLP, which incorrectly identified the date of Grant Thornton LLP’s audit reports as February 29, 2012, instead of February 28, 2012. A new consent with the correct date is attached hereto as Exhibit 23.1. Pursuant to Rule 12b-15 under the Securities Exchange Act of 1934, as amended, this Amendment No. 2 also includes new certifications pursuant to Section 302 of the Sarbanes-Oxley Act of 2002, which are attached as exhibits hereto.

No other changes are being made to the Company’s Form 10-K, as amended by Amendment No. 1, other than those set forth above and to update the Exhibit Index. This Amendment No. 2 does not reflect events occurring after the filing of the Form 10-K, nor does it otherwise modify or update disclosures there in any way other than as specifically noted above. Accordingly, this Amendment No. 2 should be read in conjunction with the Company’s other periodic reports filed with the Commission subsequent to the filing of the Form 10-K on February 28, 2012.

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.

EXHIBIT INDEX