EXHIBIT 23.1


                         INDEPENDENT AUDITORS' CONSENT

The Board of Directors
SPSS Inc.:

We consent to the incorporation by reference in the registration statements on
Form S-8 (nos. 333-57168 and 33-73120) of SPSS Inc. of our report dated March
16, 2004, relating to the statements of net assets available for benefits of the
SPSS Inc. Employee Stock Purchase Plan as of December 31, 2002 and 2003, and the
related statements of changes in net assets available for benefits for each of
the years in the three-year period ended December 31, 2003, which report appears
in the December 31, 2003 annual report on Form 11-K of the SPSS Inc. Employee
Stock Purchase Plan.

/s/ KPMG LLP

Chicago, Illinois
March 30, 2004