CERTIFICATION UNDER SECTION 906 OF SARBANES-OXLEY ACT OF 2002

Name of Registrant: Thrivent Mutual Funds

In connection with the Report on Form N-CSR for the above-named issuer, the
undersigned hereby certify, to the best of her or his knowledge, that:

1. The Report fully complies with the requirements of Section 13(a) or 15(d)
   of the Securities Exchange Act of 1934; and

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

January 7, 2005                                  /s/ Pamela J. Moret
                                                ----------------------
                                                Pamela J. Moret
                                                President

January 7, 2005                                  /s/ Randall L. Boushek
                                                ----------------------
                                                Randall L. Boushek
                                                Treasurer