EXHIBIT 5


                                ROBERT T. TUCKER

                                 ATTORNEY AT LAW



61 PURCHASE ST.                                                 (914) 967-8105
RYE, N.Y. 10580                                            FAX: (914) 967-8161


                                        June 21, 1996



CUC International Inc.
707 Summer Street
Stamford, CT 06901


Ladies and Gentlemen:
 

     I refer to the Registration Statement (the "Registration Statement")
on Form S-4 being filed by CUC International Inc. ("CUC") under the
Securities Act of 1933, as amended (the "Securities Act") with the Securities
and Exchange Commission (the "Commission"), relating to the registration
of up to 25,564,977 shares of common stock par value $ .01 per share of CUC
(the "Shares") to be issued to the shareholders of Sierra On-Line, Inc.
("Sierra") in connection with the merger of CUC's wholly owned subsidiary,
Larry Acquisition Corp. ("Merger Sub"), into and with Sierra, all as set
forth in the Agreement and Plan of Merger dated February 19, 1996, among
CUC, Sierra and Merger Sub (the "Merger Agreement").


I have examined copies of (i) the Registration Statement; (ii) the Restated
Certificate of Incorporation and By-Laws of the Company, each as amended
to date; (iii) certain resolutions of the Board of Directors of the Company
relating to the issuance of the Shares pursuant to the terms of the
Agreement and Plan of Merger; and (iv) the Agreement and Plan of Merger.
I have also examined originals, photostatic or certified copies, of such 
records of the Company, certificates of officers of the Company and of
public officials and such other documents as I have deemed relevant and
necessary as the basis for the opinions set forth below.  In such
examinations, I have assumed the genuineness of all signatures, the
authenticity of all documents submitted to me as originals, the conformity
to original documents of all copies submitted to me as certified, conformed
or photostatic copies, and the authenticity of all originals of such copies.





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     Based upon the foregoing, I am of the opinion that the issuance of the
Shares has been duly authorized by CUC and that the Shares, when issued and
delivered to the Shareholders of Sierra in accordance with the Merger
Agreement, will be legally issued, fully paid and non-assessable.


     I hereby consent to the filing of this opinion with the Commission as
an Exhibit to the Registration Statement and to the reference to the
undersigned under the caption "Legal Matters" in the Registration Statement.





                                   Very truly yours,



                                   /s/ Robert T. Tucker
                                   ------------------------------------
                                   Robert T. Tucker




RTT/kau