EXHIBIT 5.1


April 4, 2001

Marriott International, Inc.
10400 Fernwood Road
Bethesda, Maryland 20817

Ladies and Gentlemen:

We have acted as counsel for Marriott International, Inc., a Delaware
corporation (the "Company"), in connection with the Company's registration of up
to $300,000,000 aggregate principal amount of its 7% Series E Notes due 2008
(the "New Notes") on a Registration Statement on Form S-4 (the "Registration
Statement") to be filed with the Securities and Exchange Commission under the
Securities Act of 1933, as amended (the "Act").  The New Notes will be offered
in exchange for like principal amounts of the Company's 7% Series E Notes due
2008 (the "Old Notes") pursuant to that certain Exchange and Registration Rights
Agreement between the Company and Merrill Lynch, Pierce, Fenner & Smith,
Incorporated, Banc of America Securities LLC, Banc One Capital Markets, Inc.,
Deutsche Bank Securities Inc., Lehman Brothers Inc., Salomon Smith Barney Inc.
and Scotia Capital (USA) Inc., dated as of January 16, 2001, which was executed
in connection with the private placement of the Old Notes.  The New Notes will
be issued pursuant to that certain Indenture between the Company and The Chase
Manhattan Bank, as trustee, dated as of November 16, 1998 (the "Indenture").

We are familiar with the actions taken and to be taken by the Company in
connection with the offering of the New Notes.  On the basis of such knowledge
and such investigations as we have deemed necessary or appropriate, we are of
the opinion that the New Notes have been duly authorized by the Company and,
when issued in exchange for the Old Notes pursuant to the Indenture and the
terms of the exchange offer described in the Registration Statement, will be
validly issued and will constitute legal and binding obligations of the Company.
Our opinions are subject to the assumptions and qualifications that (a) at the
time the New Notes are issued, the Registration Statement will be effective and
all applicable "Blue Sky" and state securities laws will have been complied
with; and (b) the Indenture shall have been qualified under the Trust Indenture
Act of 1939, as amended.

We hereby consent to the filing of this opinion as an exhibit to the
Registration Statement and to the reference to the Company's Law Department in
the prospectus that forms a part of the Registration Statement.

Very truly yours,

Marriott International, Inc.
Law Department


By: /s/ Joseph Ryan
    ------------------------------------
    Joseph Ryan
    Executive Vice President and General Counsel