UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Form 6-K

For the month of May 2005

Commission File Number: 001-13425

Ritchie Bros. Auctioneers Incorporated

6500 River Road
Richmond, BC, Canada
V6X 4G5
(604) 273 7564
(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 þ

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):      

indicate by check mark whether by furnishing information contained in this Form,
the registrant is also thereby furnishing the information to the Commission pursuant to
Rule 12g3-2(b) under the Securities Exchange Act of 1934

Yes o                    No þ

If “Yes” is marked, indicate below the file number assigned to the registrant in
connection with Rule 12g3-2(b): 82-          

EXHIBIT INDEX

SIGNATURES

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.