UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 40-F

[Check one]



| ̈ | REGISTRATION STATEMENT PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934
|- | ------------------------------------------------------------------------------------

OR



|x | ANNUAL REPORT PURSUANT TO SECTION 13(a) OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
|- | ---------------------------------------------------------------------------------------



|                                            |  |                                
|------------------------------------------- |  | -------------------------------
|For the fiscal year ended December 31, 2012 |  | Commission File Number: 1-31556

FAIRFAX FINANCIAL HOLDINGS LIMITED

(Exact name of Registrant as specified in its charter)

Canada

(Province or other jurisdiction of incorporation or organization)

6331

(Primary Standard Industrial Classification Code Number (if applicable))

95 Wellington Street West

Suite 800

Toronto, Ontario Canada

M5J 2N7

(416) 367-4941

(Address and telephone number of Registrants principal executive offices)

Not Applicable

(I.R.S. Employer Identification Number (if applicable))

CT Corporation System

111 Eighth Avenue, 13thFloor

New York, NY 10011

U.S.A.

(212) 894-8700

(Name, address (including zip code) and telephone number (including area code)

of agent for service in the United States)

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

Not Applicable

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

Subordinate Voting Shares

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

Not Applicable

For annual reports, indicate by check mark the information
filed with this Form:

x  Annual information
form     x  Audited annual financial statements

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:



|                          |  |           
|------------------------- |  | ----------
|Subordinate Voting Shares |  | 19,496,641
|Multiple Voting Shares    |  | 1,548,000 

Indicate by check mark whether the Registrant: (1) has filed all reports required to be filed by
Section 13 or 15(d) of the Exchange Act 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   ̈    No   ̈









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UNDERTAKING AND CONSENT TO SERVICE OF PROCESS

Fairfax Financial Holdings Limited (the Registrant) undertakes to make available, in person or by telephone, representatives to respond to
inquiries made by the staff of the Securities and Exchange Commission, and to furnish promptly, when requested to do so by the Securities and Exchange Commission staff, information relating to the securities in relation to which the obligation to
file an annual report on Form 40-F arises; or transactions in said securities. The Registrant has previously filed with the Securities and Exchange Commission a Form F-X in connection with the class of securities in relation to which the obligation
to file this report arises.

CONTROLS AND PROCEDURES

Evaluation of Disclosure Controls and Procedures

The Registrants chief executive
officer and its chief financial officer, after evaluating the effectiveness of the Registrants disclosure controls and procedures, as of the end of the period covered by this annual report on Form 40-F, have concluded, based upon such
evaluation, that the Registrants disclosure controls and procedures were effective as of the end of such period.

Managements
Report on Internal Control over Financial Reporting

On October 12, 2012, the Registrant completed the acquisition of Brit Insurance
Limited, which was subsequently renamed Riverstone Insurance Limited (RiverStone Insurance). In conducting their evaluation of the effectiveness of the Registrants internal controls over financial reporting (as defined in
Rules 13a-15(e) and 15d-15(e) under the Exchange Act), the Registrants chief executive officer and its chief financial officer limited the scope of such evaluation to exclude the internal controls within RiverStone Insurance due to the
proximity to year-end of the acquisition. The operations of RiverStone Insurance represented 0.5% of the Registrants consolidated revenues for the year ended December 31, 2012 and represented 4.0% of the Registrants consolidated net
assets for the year ended December 31, 2012.

Managements Report on internal control over financial reporting is included in
Exhibit 2 hereto and is incorporated by reference herein.

Attestation Report of the Independent Auditors

The attestation report of PricewaterhouseCoopers LLP on internal control over financial reporting is included in Exhibit 2 hereto and is incorporated by
reference herein.

Changes in Internal Control over Financial Reporting

There was no change in the Registrants internal control over financial reporting that occurred during the period covered by this report that has materially affected, or is reasonably likely to
materially affect, the Registrants internal control over financial reporting.

The design of any system of controls and procedures is
based in part upon certain assumptions about the likelihood of future events. There can be no assurance that any design will succeed in achieving its stated goals under all potential future conditions, regardless of how remote.



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IDENTIFICATION OF THE AUDIT COMMITTEE

The Registrant has a standing audit committee established in accordance with Section 3(a)(58)(A) of the Securities Exchange Act of 1934. The members
of the Registrants audit committee are Alan D. Horn, Anthony F. Griffiths, Robert J. Gunn and Timothy R. Price. The disclosure provided under Statement of Corporate Governance PracticesAudit Committee in the Registrants
Management Proxy Circular, included as Exhibit 5 hereto, is incorporated by reference herein.

AUDIT COMMITTEE FINANCIAL
EXPERT

The Registrants board of directors determined that it has at least one audit committee financial expert serving on its audit
committee. Mr. Alan D. Horn has been determined to be such an audit committee financial expert and is independent as that term is defined by the New York Stock Exchanges listing standards. The U.S. Securities and Exchange Commission
has indicated that the designation of Mr. Horn as an audit committee financial expert does not make Mr. Horn an expert for any purpose, impose any duties, obligations or liability on Mr. Horn that are greater than those
imposed on members of the audit committee and board of directors who do not carry this designation or affect the duties, obligations or liability of any other members of the audit committee or board of directors.

CORPORATE GOVERNANCE GUIDELINES

The disclosure provided under Statement of Corporate Governance Practices in the Registrants Management Proxy Circular, included as Exhibit 5 hereto, is incorporated by reference herein.

CODE OF ETHICS

The disclosure provided under Statement of Corporate Governance Practices in the Registrants Management Proxy Circular, included as Exhibit 5 hereto, is incorporated by reference herein.

PRINCIPAL ACCOUNTANT FEES AND SERVICES

For details on the Registrants accountant fees payable to PricewaterhouseCoopers LLP and its affiliates for the years ended December 31, 2012 and December 31, 2011, as well as a
description of the nature of each category of fees, see the information under Audit Committee in the Registrants Annual Information Form dated March 8,2013, included as Exhibit 1 hereto.

Pre-Approval Policies and Procedures

The Registrants Audit Committee has adopted a pre-approval policy with respect to permitted audit and non-audit services. Non-audit fees are
expected to relate primarily to tax advisory services. Under the policy, estimated non-audit fees payable by the Registrant and its subsidiaries must be submitted prior to the initiation of non-audit services in advance of each financial quarter for
pre-approval by the Registrants Audit Committee. Requests by the Registrant or its subsidiaries for pre-approval of non-audit fees (other than tax advisory services discussed below) within any financial quarter must be submitted to the
Registrants chief financial officer and approved by the Chair of the Audit Committee and must be presented to the Committee at its next meeting. During any quarter, the Registrants chief financial officer may



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approve requests for tax advisory services of less than CDN $5,000 per item subject to an aggregate quarterly limit of CDN $25,000 for Canadian and international tax matters and $25,000 for U.S.
tax matters.

For the year ended December 31, 2012, none of the services described above were approved by the Audit Committee pursuant to
paragraph (c)(7)(i)(C) of Rule 2-01 of Regulation S-X.

OFF-BALANCE SHEET ARRANGEMENTS

The Registrant and its subsidiaries have certain security arrangements and commitments that have financial implications. These arrangements are described
in Note 20 to the Registrants audited consolidated financial statements for the year ended December 31, 2012 included as Exhibit 2 hereto.

TABULAR DISCLOSURE OF CONTRACTUAL OBLIGATIONS

Tabular disclosure of the Registrants
present and future obligations as at December 31, 2012 is provided in Note 24 to the Registrants audited consolidated financial statements for the year ended December 31, 2012 included as Exhibit 2 hereto.

For further details on the Registrants provision for claim liability, long term debt principal and interest payments, purchase obligation and other
liabilities payments and operating lease payments, see Notes 8, 15, 22 and 24 of the Registrants audited consolidated financial statements for the year ended December 31, 2012 included as Exhibit 2 hereto.

FORWARD-LOOKING INFORMATION

Certain statements contained herein may constitute forward-looking statements and are made pursuant to the safe harbor provisions of the United States Private Securities Litigation Reform Act
of 1995. The words believe, anticipate, project, expect, intend, estimate, may, should, will likely result, will seek to, or
will continue and similar expressions are intended to identify such forward-looking statements. Such forward-looking statements are subject to known and unknown risks, uncertainties and other factors which may cause the actual results,
performance or achievements of the Registrant to be materially different from any future results, performance or achievements expressed or implied by such forward-looking statements.

Such factors include, but are not limited to: a reduction in net income if the Registrants loss reserves (including reserves for asbestos, environmental and other latent claims) are insufficient;
underwriting losses on the risks the Registrant insures that are higher or lower than expected; the occurrence of catastrophic events with a frequency or severity exceeding the Registrants estimates; the cycles of the insurance market and
general economic conditions, which can substantially influence the Registrants and the Registrants competitors premium rates and capacity to write new business; changes in market variables, including interest rates, foreign
exchange rates, equity prices and credit spreads, which could negatively affect the Registrants investment portfolio; risks associated with the Registrants use of derivative instruments; the failure of the Registrants hedging
methods to achieve their desired risk management objective; exposure to credit risk in the event the Registrants reinsurers fail to make payments to the Registrant under the Registrants reinsurance arrangements; exposure to credit risk
in the event the Registrants insureds, insurance producers or reinsurance intermediaries fail to remit premiums that are owed to the Registrant or failure by the Registrants insureds to reimburse the Registrant for deductibles that are
paid by the Registrant on their behalf; risks associated with implementing the Registrants business strategies; the timing of claims payments being sooner or the receipt of reinsurance recoverables being later than anticipated by the
Registrant; the inability of the Registrants





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subsidiaries to maintain financial or claims paying ability ratings; a decrease in the level of demand for insurance or reinsurance products, or increased competition in the insurance industry;
the failure of any of the loss limitation methods the Registrant employs; the impact of emerging claim and coverage issues; the Registrants inability to obtain reinsurance coverage in sufficient amounts, at reasonable prices or on terms that
adequately protect the Registrant; the Registrants inability to access cash of the Registrants subsidiaries; the Registrants inability to obtain required levels of capital on favorable terms, if at all; loss of key employees; the
passage of legislation subjecting the Registrants businesses to additional supervision or regulation, including additional tax regulation, in the United States, Canada or other jurisdictions in which the Registrant operates; risks associated
with government investigations of, and litigation related to, insurance industry practice or any other conduct; risks associated with political and other developments in foreign jurisdictions in which the Registrant operates; risks associated with
the current purported class action litigation; risks associated with the Registrants pending civil litigation; the influence exercisable by the Registrants significant shareholder; adverse fluctuations in foreign currency exchange rates;
the Registrants dependence on independent brokers over whom the Registrant exercises little control; an impairment in the carrying value of the Registrants goodwill and indefinite-lived intangible assets; the Registrants failure to
realize deferred income tax assets; assessments and shared market mechanisms which may adversely affect the Registrants insurance subsidiaries; and failures or security breaches of the Registrants computer and data processing
systems. Additional risks and uncertainties are described in Exhibit 3 hereto under the heading Issues and Risks. The Registrant disclaims any intention or obligation to update or revise any forward-looking statements.



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SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant certifies that it meets all of the requirements for filing on Form 40-F and has duly caused this annual report to be
signed on its behalf by the undersigned, thereunto duly authorized.



|                    |  |  |  |                                    |  |                 |  |                           
|------------------- |  |  |  | ---------------------------------- |  | --------------- |  | --------------------------
|                    |  |  |  | FAIRFAX FINANCIAL HOLDINGS LIMITED
|                    |  |  | 
|Date: March 8, 2013 |  |  |  | By:                                |  | /s/ Paul Rivett
|                    |  |  |  |                                    |  | Name:           |  | Paul Rivett               
|                    |  |  |  |                                    |  | Title:          |  | Vice President, Operations



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EXHIBIT INDEX



|  |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|- |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|1 |  | Annual Information Form dated March 8, 2013.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
|  | 
|2 |  | Audited Consolidated Financial Statements of the Registrant as of December 31, 2012 and 2011 and for the two years in the period ended December 31, 2012, the related notes, the
auditors report relating to the consolidated financial statements and the effectiveness of internal control over financial reporting and Managements Report on Internal Control over Financial Reporting.                                                                                                                                                                                                                              
|  | 
|3 |  | Managements Discussion and Analysis of Financial Condition and Results of Operations dated March 8, 2013.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
|  | 
|4 |  | Narrative Description of Business dated March 8, 2013.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
|  | 
|5 |  | The information under Statement of Corporate Governance Practices in the Registrants Management Proxy Circular, dated March 8, 2013 in connection with the annual
meeting of shareholders to be held on April 11, 2013, is incorporated herein by reference to Exhibit 1 to the Registrants Report on Form 6-K furnished to the Securities and Exchange Commission on March 8, 2013.                                                                                                                                                                                                                                  
|  | 
|6 |  | The information under Description of Subordinate Voting Shares and Preferred Shares, Description of the Series C Shares, Description of the Series E
Shares, Description of the Series G Shares, Description of the Series I Shares and Description of the Series K Shares in the Registrants short form base shelf prospectus dated December 10, 2012,
prospectus supplement dated September 29, 2009, prospectus supplement dated January 25, 2010, prospectus supplement dated July 21, 2010, prospectus supplement dated September 28, 2010 and prospectus supplement dated March 14, 2012,
respectively.
|  | 
|7 |  | Consent of PricewaterhouseCoopers LLP regarding its report dated March 8, 2013.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|  | 
|8 |  | Rule 13a-14(a)/15d-14(a) Certifications: Certification of Registrants Chief Executive Officer Certification of
Registrants Chief Financial Officer                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
|  | 
|9 |  | Section 1350 Certifications: Certification of Registrants Chief Executive Officer Certification of
Registrants Chief Financial Officer