QuickLinks -- Click here to rapidly navigate through this document

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549


FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER
Pursuant to Section 13a-16 or 15d-16 of the Securities Exchange Act of 1934

For the month of March 2013

Commission File Number: 333-12138

CANADIAN NATURAL RESOURCES LIMITED
(Exact name of registrant as specified in its charter)

2500, 855 - 2nd Street S.W., Calgary, Alberta, Canada T2P 4J8
(Address of principal executive offices)

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

Form 20-F

  o   Form 40-F   ý

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1).                              

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7):                              

   


Exhibit Number
  Description
 

99.1

  Canadian Natural Resources Limited Notice of Annual and Special Meeting and Management Information Circular to Shareholders dated March 13, 2013.


SIGNATURE

        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.

  CANADIAN NATURAL RESOURCES LIMITED
(Registrant)

Date: March 28, 2013                                                                         

       

 

By:

 

/s/ B. E. MCGRATH


B. E. McGRATH
Corporate Secretary



QuickLinks

SIGNATURE