EXHIBIT 32.1

                               CAMBREX CORPORATION
     CERTIFICATION PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002
                            (18 U.S.C. SECTION 1350)

Pursuant to the requirements of Section 906 of the Sarbanes-Oxley Act of 2002
(18 U.S.C. Sections 1350 (a) and (b)), the undersigned hereby certify as
follows:

      1. John R, Leone is the President, Chairman of the Board and Chief
         Executive Officer of Cambrex Corporation.

      2. The Company's Form 10-Q/A for the quarterly period ended June 30, 2004,
         accompanying this Certification, in the form filed with the
         Securities and Exchange Commission (the "Report") fully complies
         with the requirements of Section 13(a) or 15(d) of the Securities
         Exchange Act of 1934 (the "Exchange Act") and

      3. The information in the Report fairly presents, in all material
         respects, the financial condition and results of operation of the
         Company.

Dated: April 29, 2005

                                                    /s/ John R. Leone
                                                    ----------------------------
                                                    John R. Leone, President
                                                    Chairman of the Board and
                                                    Chief Executive Officer

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