Subsidiaries of
Fair, Isaac and Company, Incorporated                           EXHIBIT NO. 21.1


Name of Company and                                 Jurisdiction of
Name under which it                                 Incorporation or
Does Business                                       Organization
============================================        ============================

          Fair, Isaac International
                Corporation(1)                                California

         Data Research Technologies(1)                        Minnesota

        Risk Management Technologies(1)                       California

         Lindaro Office Park, Inc. (1)                        California

          Fair, Isaac International
            Germany Corporation(2)                            California

           Fair, Isaac International
             Canada Corporation(2)                            California

           Fair, Isaac International
               UK Corporation(2)                              California

           Fair, Isaac International
             Japan Corporation(2)                             California

       Fair, Isaac International Ltd(2)                       England

          Fair, Isaac International
             France Corporation(2)                            California

           Fair, Isaac International
             Mexico Corporation(2)                            California

          Fair, Isaac International
          Spain Corporation(2)                                California

          Fair, Isaac Brazil, LLC(2)                          Delaware

         Radar International, Inc. (3)                        Virgin Islands

         Fair, Isaac Do Brasil Ltda. (4)                      Brazil

Footnotes:

(1)      100% owned by Fair, Isaac and Company, Incorporated.
(2)      100% owned by Fair, Isaac International Corporation.
(3)      100% owned by Risk Management Technologies



(4)      99%  owned by Fair,  Isaac  International  Corporation  and 1% owned by
         Fair, Isaac Brazil, LLC

Revised 2000