EXHIBIT 32.1

                            CERTIFICATION PURSUANT TO
                             18 U.S.C. SECTION 1350
                             AS ADOPTED PURSUANT TO
                  SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

I, Gilbert G. Lundstrom, Chairman of the Board and Chief Executive Officer of
TierOne Corporation (the "Company"), hereby certify, pursuant to Section 906 of
the Sarbanes-Oxley Act of 2002, 18 U.S.C. Section 1350, that:

      (1)   The Annual Report on Form 10-K of the Company for the year ended
            December 31, 2003 (the "Report") fully complies with the
            requirements of Section 13(a) or 15(d) of the Securities Exchange
            Act of 1934 (15 U.S.C. 78m(a) or 78o(d)); and

      (2)   The information contained in the Report fairly presents, in all
            material respects, the financial condition and results of operations
            of the Company.

Date: March 5, 2004             By: /s/ Gilbert G. Lundstrom
                                   -------------------------------------------
                                   Gilbert G. Lundstrom, Chairman of the Board
                                   and Chief Executive Officer

Note: A signed original of this written statement required by Section 906 of the
Sarbanes-Oxley Act has been provided to TierOne Corporation and will be retained
by TierOne Corporation and furnished to the Securities and Exchange Commission
or its staff upon request.