Exhibit 99-B

                    Certification of Chief Executive Officer
                                   Pursuant to
                              U.S.C. Section 1350,
                             as Adopted Pursuant to
                  Section 906 of The Sarbanes-Oxley Act of 2002

I, Steven A. Raymund, Chairman of the Board of Directors and Chief Executive
Officer of Tech Data Corporation ("Tech Data"), do hereby certify, pursuant to
18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley
Act of 2002, that, to my knowledge:

(i)    Tech Data's Annual Report on Form 10-K for the fiscal year ended
       January 31, 2003, (the "Report") fully complies with the requirements
       of Section 13(a) or Section 15(d), as applicable, of the Securities
       Exchange Act of 1934, as amended; and

(ii)   the information contained in the Report fairly presents, in all
       material respects, the financial condition and results of operations of
       Tech Data.

Dated: April 24, 2003

                                             /s/ Steven A. Raymund
                                      ---------------------------------------
                                                 Steven A. Raymund
                                      Chairman of the Board of Directors and
                                              Chief Executive Officer