---



____________________

Form 40-F

> [Check one]

[ ]
      REGISTRATION STATEMENT PURSUANT TO SECTION 12 OF THESECURITIES EXCHANGE ACT OF 1934OR[X]
      ANNUAL REPORT PURSUANT TO SECTION 12(a) OR 15 (d) OF THESECURITIES EXCHANGE ACT OF 1934


For the
      fiscal year ended December 31, 2004.
      Commission
      File No. 1-13056




CAMBIOR INC.(Exact name of Registrant as specified in
      its charter)Not Applicable(Translation of Registrant's name into
      English (if applicable))Province of Québec, Canada(Province or other jurisdiction of
      incorporation or organization)1041(Primary Standard Industrial Classification
      Code Number (if applicable))Not Applicable(I.R.S. Employer Identification Number (if
      applicable))1111 St.
      Charles Street West, East Tower, Suite 750Longueuil, Québec, Canada
      J4K 5G4 (450) 677-0040(Address and telephone number of
      Registrant's principal executive offices)


RL&F Service Corp.One Rodney Square, 10th
      Floor10th and King StreetsWilmington, DE 19801Telephone: (302)
      651-7642Attention: Mark J. Gentile(Name, address (including zip code) and
      telephone number(including area code) of
      agent for service in the United States)


Securities registered or to be registered pursuant to Section
12(b) of the Act.

Title of
      each class
      Name of
      each exchange on which registeredCommon
      Shares, no par value
      American
      Stock Exchange


---



Securities registered or
      to be registered pursuant to Section 12(g) of the Act.None(Title of Class)Securities for which there is a reporting
      obligation pursuant to Section 15(d) of the Act.None


For annual reports, indicate by check mark the
      information filed with this Form:[X] Annual
      Information Form
      [ ] Audited
      annual financial statementsIndicate the number of outstanding shares of each of the issuer's classes
      of capital orcommon stock as of the close of the period covered by the annual report.December 31, 2004: 274,187,795


> Indicate by check whether the Registrant by filing 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 (the "Exchange Act"). If "Yes" is marked, indicate the filing number
>   assigned to the Registrant in connection with such Rule.

Yes ___            
No X

> 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 ____

---

UNDERTAKING AND CONSENT TO SERVICE OF PROCESSItem 1. Undertaking.
Registrant undertakes to make available, in person or by
telephone, representatives to respond to inquiries made by the Commission staff,
and to furnish promptly, when requested to do so by the Commission staff,
information relating to: the securities registered pursuant to Form 40-F; the
securities in relation to which the obligation to file an annual report on Form
40-F arises; or transactions in said securities.
Item 2. Consent to Service of Process.
Registrant filed with the Commission a written irrevocable consent and power
of attorney on Form F-X on April 26, 1994.

---

Material included in this Form 40-F:
Annual Information Form for the year ended December 31, 2004;
  Management's Discussion and Analysis of financial condition and results of
  operation included in the Annual Report for the year ended December 31, 2004;
  Audited Consolidated Financial Statements for the year ended December 31,
  2004 together with the Auditors' report thereon;
  Information Circular provided in connection with the
  solicitation of proxies by the management of Cambior Inc. for use at the
  Annual General and Special Meeting of Shareholders to be held on May 12, 2005.Disclosure controls and procedures are defined by the
Securities and Exchange Commission as those controls and procedures that are
designed to ensure that information required to be disclosed in our filings
under the Securities Exchange Act of 1934 is recorded, processed, summarized and
reported within the time periods specified in the Securities and Exchange
Commission rules and forms. Our Chief Executive Officer and Chief Financial
Officer have evaluated our disclosure controls and procedures within 90 days
prior to filing this Annual Report on Form 40-F and have determined that such
disclosure controls and procedures are effective.
Subsequent to our evaluation, there were no significant
changes in internal controls or other factors that could significantly affect
internal controls, including any corrective actions with regards to significant
deficiencies and material weaknesses.
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.

---



|LIST OF
    EXHIBITS                                       
|-----------------------------------------------------------
|                                                           
|                                                           
|The following documents are
    attached to this Form 40-F:
|                                                           
|                                                           
|Exhibit 31.1                                               
|                                                           
|                                                           
|                                                           
|Exhibit 31.2                                               
|                                                           
|                                                           
|                                                           
|Exhibit 32.1                                               
|                                                           
|                                                           
|                                                           
|Exhibit 32.2                                               
|                                                           

---

SIGNATURES
Pursuant to the requirements of the Exchange Act, 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, thereto duly authorized.

Registrant
      Cambior Inc.By
      /s/
      Lucie DesjardinsLucie Desjardins,Corporate SecretaryDate
      March 29, 2005


---