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               COMPUTER ASSOCIATES INTERNATIONAL, INC.
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                                                              One Computer Associates Plaza
[LOGO]                                                        Islandia, New York 11749
                                                              tel: +1 631 342 6000
                                                              fax: +1 631 342 6800
                                                              ca.com


                                                               July 19, 2001

Dear Computer Associates Shareholder:

We are enclosing CA's proxy statement and writing to ask for your support as we
prepare for CA's annual meeting of shareholders on Wednesday, August 29, 2001.

               YOUR VOTE IS IMPORTANT -- PROTECT YOUR INVESTMENT
              PLEASE SIGN AND RETURN THE ENCLOSED WHITE PROXY CARD

As has been widely reported in the press, Texas financier Sam Wyly has launched
a campaign to get himself elected as chairman of your company and install
himself and nine of his associates on CA's board. His plan? Frankly, we believe
it's vague but he has said he wants to break up CA into four separate business
units. Why? Well, that's not entirely clear either, although he did tell our
largest investor in a letter:

    "IT'S NOT THAT I HAVE A BIG INVESTMENT POSITION...OF COURSE, I'M MOTIVATED
    TO INCREASE MY WEALTH, BUT THAT'S NOT THE ONLY SCORECARD AND THERE ARE OTHER
    WAYS I CAN HAVE FUN."

                --SAM WYLY, (JUNE 1, 2001)

We believe very strongly that Mr. Wyly's ill-conceived plan for CA is a bad idea
for CA's shareholders, customers and employees. DON'T LET HIM "HAVE FUN" at your
expense.

       CA'S CURRENT MANAGEMENT AND BOARD HAVE PERFORMED FOR SHAREHOLDERS

Consider the following facts:

    - CA's existing management team has grown CA to the fourth-largest software
      firm with a market capitalization of over $18 billion.

    - Since CA's IPO on December 11, 1981, CA's stock price has outperformed
      Apple, Hewlett-Packard, IBM and Intel.*

    - Over the last year, CA's stock price has outperformed Apple, Cisco,
      Compaq, Dell, EMC, Hewlett-Packard, IBM, Intel, and Microsoft, and our
      stock price is up over 75% year-to-date.**

    - In the last three years alone, CA has returned over $1.5 billion to
      shareholders in the form of dividends and share repurchases, while
      generating over $4.0 billion in cash from operations.

    - From FY 1982-FY 2001, CA's revenues grew at a 30% CAGR.

*   BASED ON STOCK PRICE APPRECIATION FROM 12/11/81 -- 7/13/01: CA (13,274%),
    APPLE (430%), HEWLETT- PACKARD (1,282%), IBM (698%), AND INTEL (11,379%).
    FIGURES FROM FACTSET.

**  BASED ON STOCK PRICE APPRECIATION FROM 7/13/00 -- 7/13/01: CA (19%), APPLE
    (-56%), CISCO (-71%), COMPAQ (-44%), DELL (-47%), EMC (-71%),
    HEWLETT-PACKARD (-59%), IBM (5%), INTEL (-58%) AND MICROSOFT (-11%). BETWEEN
    12/29/00 AND 7/17/01, CA'S STOCK PRICE ROSE 78%. FIGURES FROM FACTSET.

Have we had some challenges? Yes, and like many software and technology
companies, we had a disappointing quarter last year. But that can't erase our
track record, and it shouldn't obscure the tremendous platform we have built for
the future.

           WE BELIEVE CA'S NEW BUSINESS MODEL IS CREATING SHAREHOLDER
                  VALUE AND SUSTAINABLE COMPETITIVE ADVANTAGE

Last October, we introduced a new business model that offers CA's many thousands
of customers a wide range of innovative purchasing and payment options to help
ensure greater payoff from software investments and achieve a simpler, more
flexible and more cost-effective way for them to implement new CA products.

Here's what just some customers have to say about our new model and their
satisfaction with CA*:

    "DOING BUSINESS WITH CA HAS NEVER BEEN EASIER. WORKING CLOSELY TOGETHER, WE
    WERE ABLE TO CRAFT AN AGREEMENT THAT PROVIDES WORLDSPAN WITH FLEXIBILITY AND
    PREDICTABLE SOFTWARE COSTS TIED TO THE GROWTH OF OUR BUSINESS. UNDER THIS
    NEW TRANSACTION FEE AGREEMENT, CA HAS ALIGNED THEIR SUCCESS WITH THE SUCCESS
    OF WORLDSPAN. THIS IS A GREAT EXAMPLE OF A TRUE PARTNERSHIP."

                -- David Lauderdale, Senior Vice President, Worldwide Technical
                   Operations, Worldspan, May 22, 2001

    "THE FLEXIBILITY OF CA'S NEW BUSINESS MODEL REPRESENTS AN IMPORTANT CHANGE
    FOR SOFTWARE CUSTOMERS. IT ALLOWS US TO FOCUS MORE ON OUR TECHNOLOGY NEEDS
    RATHER THAN ON FINANCIAL TRANSACTIONS. I WISH OTHER SOFTWARE VENDORS WOULD
    FOLLOW SUIT. WE'VE FELT THAT CA HAS TREATED US AS A PARTNER SO WE HAVE TRIED
    TO TREAT CA AS A PARTNER IN RETURN AND WE ARE VERY HAPPY WITH OUR
    RELATIONSHIP WITH COMPUTER ASSOCIATES."

                -- Greg Clancy, Executive VP & CIO, Sallie Mae/USA Group, Inc.,
                   March 20, 2001

    "CA'S NEW BUSINESS MODEL PROVIDES CFI WITH MORE THAN GREAT TECHNOLOGY. UNDER
    THE FLEXIBLE NEW LICENSING TERMS, LIKE THE MONTH-TO-MONTH OPTION, WE ARE
    ENJOYING THE BENEFITS OF CA'S EBUSINESS MANAGEMENT SOLUTIONS WITHOUT THE
    RISKS OF THE LONGER-TERM CONVENTIONAL LICENSING ARRANGEMENTS. IN AN
    EVER-EVOLVING BUSINESS WORLD, WE WELCOME A TECHNOLOGY PARTNER THAT GIVES US
    CHOICE AND FLEXIBILITY."

                -- Andy Crowder, CIO, CFI/Westgate Resort, March 19, 2001

           WALL STREET AGREES THAT CA'S NEW MODEL REPRESENTS A STRONG
                         PLATFORM FOR CONTINUED GROWTH

Consider these comments*:

    "...TO THE EXTENT THIS NEW MODEL IS CREATING COMPETITIVE ADVANTAGE FOR CA BY
    VIRTUE OF ITS RELATED IMPACT ON THE COMPANY'S SALES FORCE AND CUSTOMERS,
    THERE IS EVEN MORE REASON TO BELIEVE THIS NEW BUSINESS MODEL IS PAYING
    DIVIDENDS FASTER THAN WE OTHERWISE WOULD HAVE ANTICIPATED. WE BELIEVE THE
    TOUGHER MARKET ENVIRONMENT WE ARE NOW ENTERING IS LIKELY TO BE AN IMMEDIATE
    PROVING GROUND FOR CA'S NEW BUSINESS MODEL AND HAS THE POTENTIAL TO MAKE CA
    AN EVEN STRONGER COMPANY AS THIS ENVIRONMENT PUNISHES THE WEAK INTO
    SUBMISSION."

                -- Wendell Laidley, Credit Suisse First Boston, April 17, 2001

    "WE THINK THAT CA'S SHIFT TO A RATABLE REVENUE RECOGNITION MODEL IS
    AFFORDING MANAGEMENT WITH PERHAPS THE HIGHEST LEVELS OF VISIBILITY IN THE
    COMPANY'S HISTORY."

                -- John McPeake, Prudential Securities, April 17, 2001

    "THE OUTLOOK REVISION REFLECTS THE CUSTOMER RECEPTIVITY OF THE COMPANY'S NEW
    BUSINESS MODEL AND THE ABSENCE OF ANY MEANINGFUL DISRUPTION IN PERFORMANCE
    AS A RESULT OF LAUNCHING THE MODEL."

                -- Standard & Poor's, April 18, 2001

    "... MOODY'S EXPECTATION [IS] THAT [CA] WILL EXTEND ITS LONG HISTORY OF
    PROFITABLE GROWTH AND STRONG CASH-FLOW GENERATION..."

                -- Moody's Investors Service, June 26, 2001

    "... WE BELIEVE CA'S UNIQUE ADVANTAGE INCLUDES ITS BROAD TECHNOLOGY OFFERING
    AND LARGE ENTERPRISE INSTALLED BASE, WHICH TOGETHER ADD UP TO LOTS OF
    CROSS-SELLING OPPORTUNITIES. WE BELIEVE THE NEW MODEL WILL FACILITATE
    POSITIVE CUSTOMER RELATIONS BY OFFERING THE FLEXIBILITY OF MORE MANAGEABLE
    PAYMENT TERMS AND ELIMINATE WHAT SOME VIEWED AS ANNOYING BUT TYPICAL
    QUARTER-END PUSHES FOR SALES."

                -- Sarah Mattson, Dain Rauscher Wessels, June 5, 2001

    "WE DON'T VIEW [WYLY'S ACTION] AS ANYTHING MORE THAN WHAT IT IS--AN ATTEMPT
    TO TAKEOVER THE COMPANY AT A LOW PRICE." "... THE NEW MODEL SHOULD
    STRENGTHEN CA'S FUNDAMENTAL AND COMPETITIVE POSITION BY GIVING CUSTOMERS
    MORE FLEXIBILITY IN HOW THEY LICENSE AND USE CA'S SOFTWARE."

                -- Drew Brosseau/Peter Kuper, SG Cowen, June 21, 2001 / June 5,
                   2001

      WE BELIEVE SAM WYLY'S ILL-FOUNDED PROPOSAL SIMPLY DOESN'T MAKE SENSE

We think breaking CA into four separate business units will hurt customers,
increase costs and reduce innovation and synergies. We believe Wyly's plan
would:

    - CRIPPLE CUSTOMER SERVICE AND REDUCE CA'S ABILITY TO PROVIDE INTEGRATED
      SOLUTIONS. Two-thirds of our customers use products across our focus areas
      and enjoy a one-stop shop for all their business operation needs. Under
      Wyly's plan, our customers would have to deal with up to four different
      sales people and four different organizations--which is clearly not what
      our customers want.

    - REDUCE DEVELOPMENT SYNERGIES AND CROSS-SELLING OPPORTUNITIES. Dividing
      CA's development efforts across four separate businesses would eliminate
      the sharing of technology that in our view gives CA a competitive
      advantage and has helped us reach the point where over 99% of Fortune 500
      companies use our products and renewal rates exceed 80%. In addition, our
      sales force would lose the ability to cross-sell our products.

    - INCREASE ADMINISTRATIVE DUPLICATIONS AND INCREASE EXPENSES. The creation
      of four separate businesses would generate multiple duplications in
      organizational structure, necessitating four CEOs, four heads of
      marketing, etc. We think this is an inefficient way of doing business and
      could result in drastically increased administrative expenses and overhead
      costs.

HERE'S WHAT SOME CUSTOMERS AND OTHERS HAVE TO SAY ABOUT SAM WYLY'S PLAN*:

    "IF CA IS BROKEN UP INTO FOUR COMPANIES THERE WILL BE NO SYNERGY BETWEEN
    DIFFERENT GROUPS. IT'S VERY DIFFICULT TO SAY YOU ARE GOING TO MOVE UNICENTER
    INTO ONE AREA. SYSTEMS MANAGEMENT HAS IMPLICATIONS IN SECURITY AS WELL AS
    STORAGE MANAGEMENT. THIS IS NOT A COUNTRY YOU ARE SEPARATING. IT'S JUST NOT
    THAT EASY. THE WHOLE TAKEOVER THING IS VERY FLAWED IF YOU ASK ME."

                -- Niten Ved, President NetCom Systems, July 3, 2001

    "IF CA WERE DIVIDED INTO FOUR INDEPENDENT BUSINESSES, WE WOULD BE FORCED TO
    DEAL WITH MULTIPLE POINTS OF CONTACT FOR OUR VARIOUS SOFTWARE NEEDS. THIS
    SORT OF ORGANIZATION WOULD DECREASE ACCOUNTABILITY, AS WELL AS CA'S ABILITY
    TO OFFER FULLY INTEGRATED SOLUTIONS. I SEE NO UPSIDE FOR CA CUSTOMERS UNDER
    WYLY'S PLAN."

                -- Allan Horn, Vice President, Data Center Operations, Sallie
                   Mae, July 2, 2001

    "WYLY'S PLAN SOUNDS LIKE A "SMALL IS BEAUTIFUL' FANTASY. CUSTOMERS ARE
    LOOKING FOR SOLUTIONS TO COMPREHENSIVE BUSINESS PROBLEMS, NOT A BUNCH OF
    INDEPENDENT TOOLS THEY HAVE TO ASSEMBLE INTO A SOLUTION."

                -- Rick Ptak, Hurwitz Group, July 9, 2001

    "THE PROPOSED PLAN SHOWS [MR. WYLY] HAS A PROFOUND LACK OF KNOWLEDGE ABOUT
    WHAT THE COMPANY HAS TO OFFER ITS USERS. CA HAS BEEN IMPROVING, IMPROVING,
    IMPROVING. TO ME, HE SEEMS LIKE A SMART MAN WHO GOT HIS $4 BILLION FROM
    CA--WHO WANTS TO HAVE HIS CAKE AND YOURS, TOO."

                -- Valerie O'Connell, Aberdeen Group, July 9, 2001

           SAM WYLY'S CAMPAIGN, IN OUR VIEW, IS BASED ON SELF-SERVING
            CUSTOMER SATISFACTION RESEARCH AND MISLEADING PUBLICITY
                    DON'T LET HIM "HAVE FUN" AT YOUR EXPENSE

This has been a tough time for our industry as a whole, but our initiatives are
bearing fruit and investors and customers agree. WE BELIEVE MR. WYLY'S COMMENTS
ABOUT OUR TREATMENT OF EMPLOYEES ARE UNTRUE AND THAT HE INSULTS THE INTELLIGENCE
OF OUR CUSTOMERS. Over 93% of respondents to a CA customer survey conducted by
GuideStar in January and February of 2001 said that CA's software was
"important" to "mission-critical" to the successful operation of their business.
In addition, about 75% said they had a positive working relationship with our
company. GUIDESTAR'S RESEARCH SHOWS THAT OUR CUSTOMER SATISFACTION RATINGS
INCREASED SIGNIFICANTLY IN 2000, AND WE EXPECT THEY WILL CONTINUE TO RISE AS
CUSTOMERS ENJOY THE FLEXIBILITY PROVIDED BY OUR NEW BUSINESS MODEL.

We know we have to earn your support every day and we intend to stay focused on
continuing to build and improve CA.

YOUR VOTE IS IMPORTANT!  Enclosed you will find a WHITE proxy card with which to
vote. Only the WHITE proxy card allows you to vote for the current Board of
Directors. We urge you to vote FOR all of the items on the WHITE proxy and to
mail back ONLY the WHITE proxy in the enclosed postage-paid envelope. We urge
you to ignore and throw away any cards that may be sent to you by Wyly or Ranger
Governance. The prompt return of your WHITE proxy will ensure that your vote is
counted.

                               Very truly yours,


                                                               
                        [LOGO]                                    [LOGO]
                        CHARLES B. WANG                           SANJAY KUMAR
                        CHAIRMAN                                  PRESIDENT & CHIEF EXECUTIVE OFFICER


   For additional information, please call MACKENZIE PARTNERS, INC. TOLL-FREE at
800-322-2885,
            or call D.F. KING & CO., INC. TOLL-FREE at 800-431-9642.

    *   To the extent that individual customers, independent industry
researchers, financial analysts, or Company commissioned research, are quoted in
these proxy materials, it is the Company's policy to use reasonable efforts to
verify the source and accuracy of the quote. The Company has not, however,
sought or obtained the consent of the quoted source to the use of such quote as
proxy soliciting material.