<DOCUMENT>
<TYPE>EX-5.1
<SEQUENCE>3
<FILENAME>y95911exv5w1.txt
<DESCRIPTION>OPINION OF CAREY OLSEN
<TEXT>
<PAGE>

                                                                     EXHIBIT 5.1

                           (Letterhead of Carey Olsen)

Amdocs Limited
Tower Hill House
The Bordage
St. Peter Port
Guernsey

April 7, 2004

Dear Sirs:

RE:      REGISTRATION STATEMENT ON FORM F-3

The following opinion is furnished to you in connection with the filing by
Amdocs Limited, a company organised under the laws of Guernsey, Channel Islands
(the "Company"), of its registration statement on Form F-3 (the "Registration
Statement"), under the Securities Act of 1933, as amended, relating to the
registration for resale by the selling securityholders named therein of $450.0
million principal amount of 0.50% Convertible Senior Notes due 2024 (the
"Notes") and the ordinary shares, (pound)0.01 par value, of the Company issuable
upon conversion of the Notes (the "Shares"). The Notes were issued pursuant to
an Indenture, dated March 5, 2004 (the "Indenture"), among the Company and The
Bank of New York, as trustee (the "Trustee").

In that connection, we have examined originals, or copies certified or otherwise
identified to our satisfaction, of such documents, corporate records and other
instruments as we have deemed necessary or appropriate for the purposes of this
opinion, including the Registration Statement to be filed with the Securities
and Exchange Commission with respect to the Notes and the Shares, the
Registration Rights Agreement, dated March 5, 2004, the Indenture, resolutions
adopted by the board of directors of the Company, and the Articles of
Association and Memorandum of Association of the Company.

Based upon such examination, we are of opinion that:

     1.   The Company has been duly organized and is validly existing as a
          company under the laws of Guernsey, Channel Islands.

     2.   The Notes have been duly authorized and are validly issued, executed
          and delivered by the Company and, assuming they have been
          authenticated by the Trustee in the manner provided by the Indenture,
          are valid and binding obligations of the Company, entitled to the
          benefits provided by the Indenture and enforceable against the Company
          in accordance with their terms; and

     3.   The Shares issuable upon conversion of the Notes have been duly
          authorized by the Company and, when issued upon conversion of the
          Notes in accordance with the terms of the Indenture, will be validly
          issued, fully paid and nonassessable.

We express no opinion on any law other than the law of Guernsey as of the date
hereof.

We hereby consent to the use of this opinion as an exhibit to the Registration
Statement.

Yours sincerely,

/s/ Carey Olsen
---------------
Carey Olsen


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