EX-99.906.CERT

ex99906cert-603.txt
SECTION 906 CERTIFICATIONS

CERTIFICATION PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT

Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, each of the
undersigned officers of Sit Mutual Funds, Inc., do hereby certify, to
such officer's knowledge, that the report on Form N-CSR of Sit Mutual
Funds, Inc. for the period ended April 30, 2003 fully complies with
the requirements of Section 13(a) or 15(d) of the Securities Exchange
Act of 1934 and information contained in the Form N-CSR fairly
presents, in all material respects, the financial condition and
results of operations of Sit Mutual Funds, Inc.


/s/ Eugene C. Sit                  /s/ Paul E. Rasmussen
- -------------------------------------   -------------------------------------
Eugene C. Sit                          Paul E. Rasmussen
Chairman                               VP Treasurer
Sit Mutual Funds, Inc.                 Sit Mutual Funds, Inc.

Dated: August 28, 2003
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A signed original of this written statement required by Section 906 has
been provided by Sit Mutual Funds, Inc. and will be retained by Sit
Mutual
funds, Inc. and furnished to the SEC or its staff upon request.