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                                 FOLEY & LARDNER                      EXHIBIT 5
                       100 NORTH TAMPA STREET, SUITE 2700
                           TAMPA, FLORIDA 33602-5804
                            TELEPHONE (813) 229-2300
                            FACSIMILE (813) 221-4210

                                December 2, 1996


ABR Information Services, Inc.
34125 U.S. Highway 19 North
Palm Harbor, Florida  34684-2118

         Re:     Registration Statement on Form S-8 Relating to Shares of
                 Common Stock Issuable Pursuant to ABR Information Services,
                 Inc. 1995 Non-Employee Director Stock Option Plan and ABR
                 Information Services, Inc. 1996 Non-Employee Director Stock
                 Option Plan

Ladies and Gentlemen:

         This opinion is being furnished in connection with the Registration
Statement on Form S-8 (the "Registration Statement") of ABR Information
Services, Inc. (the "Company"), under the Securities Act of 1933, as amended,
for the registration of 15,000 shares of common stock, par value $0.01 issuable
pursuant to the ABR Information Services, Inc.  1995 Non-Employee Director
Stock Option Plan (the "1995 Plan") and 200,000 shares of common stock par
value $0.01 issuable pursuant to the ABR Information Services, Inc. 1996
Non-Employee Director Stock Option Plan (the "1996 Plan" and together with the
1995 Plan, the "Plans").  (The shares of common stock covered by the Plans are
referred to as the "Shares.")

         We have examined and are familiar with the following:

         A.      Articles of Incorporation of the Company, as amended, as filed
in the Office of the Secretary of State of the State of Florida;

         B.      Bylaws, as amended, of the Company;

         C.      The proceedings of the Board of Directors and shareholders of
the Company in connection with the adoption of each of the Plans; and

         D.      Such other documents, Company records and matters of law as we
have deemed to be pertinent.

         Based on the foregoing, it is our opinion that:

         1.      The Company has been duly incorporated and is validly existing
and in good standing under the laws of the State of Florida.
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ABR Information Services, Inc.
December 2, 1996
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         2.      The Shares have been duly authorized and when issued in
accordance with the terms of the respective Plans will be duly and validly
issued, fully paid and nonassessable.

         We hereby consent to the inclusion of this opinion as Exhibit 5 in the
Registration Statement.  In giving this consent, we do not thereby admit that
we come within the category of persons whose consent is required under Section
7 of the Securities Act of 1933, as amended, or the rules or regulations of the
Securities and Exchange Commission promulgated thereunder.

                                        FOLEY & LARDNER



                                        By: /s/ Todd B. Pfister 
                                           ----------------------------------
                                           Todd B. Pfister