EXHIBIT 23.1

                               CONSENT OF KPMG LLP

The Board of Directors
SPSS Inc.:

We consent to the incorporation by reference in the Registration Statement on
Form S-3 of SPSS Inc. of our report dated March 28, 2003, except as to note 12,
which is as of April 1, 2003, with respect to the consolidated balance sheets of
SPSS Inc. and subsidiaries as of December 31, 2001 and 2002, and the related
consolidated statements of operations, comprehensive income (loss),
stockholders' equity and cash flows for each of the years in the three-year
period ended December 31, 2002, and the related consolidated financial statement
schedule, which report appears in the December 31, 2002 annual report on Form
10-K of SPSS Inc. and to the reference to our firm under the heading "Experts"
in the prospectus.

Our report refers to a change in the Company's method of accounting for goodwill
in 2002.

                                                          /s/ KPMG LLP
                                                    ----------------------------

Chicago, Illinois
January 29, 2004