Company: FRFXF
Filing Date: 2025-03-07
Form Type: 6-K
Source: 0001104659-25-021766
Chunk: 0

Company: FAIRFAX FINANCIAL HOLDINGS LTD/ CAN
Filing Date: 2025-03-07
Form: 6-K
Chunk 0
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<div align='center'>UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

Form 6-K

REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934</div>

| For the month of March 2025 | Commission File Number: 001-31556 |

<div align='center'>FAIRFAX FINANCIAL HOLDINGS LIMITED(Name of Registrant)

95 Wellington Street West
Suite 800
Toronto, Ontario
Canada M5J 2N7(Address of principal executive office)</div>

Indicate by check mark whether the registrant files or will file annual
reports under cover of Form 20-F or Form 40-F.

| Form 20-F ¨ | Form 40-F x |

<div align='center'>NO INCORPORATION BY REFERENCE</div>

The information included in this Form 6-K,
including Exhibits 99.1 and 99.2 attached hereto, is not incorporated by reference into, and does not form a part of, any registration statement previously
filed by the Registrant.

<div align='center'>SIGNATURES</div>

Pursuant to the requirements
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.

| Date: March 7, 2025 | By: | FAIRFAX FINANCIAL HOLDINGS LIMITED 
 /s/                                
 Derek Bulas                        |                                 |
|:--------------------|:----|:-----------------------------------|:--------------------------------|
|                     |     | Name:                              | Derek Bulas                     |
|                     |     | Title:                             | Vice President, Chief Legal     
 Officer and Corporate Secretary |

<div align='center'>EXHIBIT INDEX</div>

| Exhibit | Description of Exhibit   |
| 99.1    | 2024 Annual Report       |
| 99.2    | Report on Modern Slavery |