SECURITIES AND EXCHANGE COMMISSION

FORM 6-K

Report of Foreign Issuer Pursuant to Rule 13a-16 or 15d-16

of the Securities Exchange Act of 1934

[March 10, 2005]

Metso Corporation

(Translation of registrant’s name into English)
Fabianinkatu 9 A,
PO Box 1220
FIN-00101
Helsinki, Finland

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

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

If “Yes” is marked, indicate below the file number assigned to the registrant in connection with Rule 12g-32(b): 82-                    

SIGNATURES

Date  March 10, 2005

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf of the undersigned, thereunto duly authorized.

Name:

METSO’S ANNUAL REPORT 2004 PUBLISHED

(Helsinki, Finland, March 10, 2005) – Metso Corporation (NYSE: MX; OMX: MEO)

Metso Corporation’s printed Annual Report 2004 has been published in Finnish, Swedish and English. Pdf-versions of the printed reports and web report are available at www.metso.com/investors. Annual Report can be ordered from the same web address.

Metso is a global technology corporation serving customers in the pulp and paper industry, rock and minerals processing, the energy industry and selected other industries. In 2004, the net sales of Metso Corporation were approx. EUR 4 billion, and it has some 23,000 employees in more than 50 countries. Metso’s shares are listed on the Helsinki and New York Stock Exchanges.