UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                              Washington, DC 20549

                                     FORM 15

CERTIFICATE AND NOTICE OF TERMINATION OF REGISTRATION UNDER SECTION 12(g) OF THE
SECURITIES EXCHANGE ACT OF 1934 OR SUSPENSION OF DUTY TO FILE REPORTS UNDER
SECTIONS 13 AND 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934.

                                                   Commission File No.:  1-13094

                               DIME BANCORP, INC.
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             (Exact name of registrant as specified in its charter)

                      589 Fifth Avenue, New York, NY 10017
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   (Address, including zip code, and telephone number, including area code of
                    registrant's principal executive offices)

                     Common Stock, $0.01 par value per share
                        (including any associated rights)
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            (Title of each class of securities covered by this Form)

                                       N/A
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 (Titles of all other classes of securities for which a duty to file reports
under section 13(a) or 15(d) remains)

     Please  place  an X in  the  box(es)  to  designate  the  appropriate  rule
provision(s) relied upon to terminate or suspend the duty to file reports:

          Rule 12g-4(a)(1)(i)       [x]       Rule 12h-3(b)(1)(i)       [  ]
          Rule 12g-4(a)(1)(ii)      [  ]      Rule 12h-3(b)(1)(ii)      [  ]
          Rule 12g-4(a)(2)(i)       [  ]      Rule 12h-3(b)(2)(i)       [  ]
          Rule 12g-4(a)(2)(ii)      [  ]      Rule 12h-3(b)(2)(ii)      [  ]
                                              Rule 15d-6                [  ]

     Approximate  number of holders of record as of the  certification or notice
date: 0

     Pursuant to the  requirements of the Securities  Exchange Act of 1934, Dime
Bancorp, Inc. has caused this certification/notice to be signed on its behalf by
the undersigned duly authorized person.

Dated:  January 9, 2002.            WASHINGTON MUTUAL, INC.,
                                    (as successor to Dime Bancorp, Inc.)

                                    By: /s/ Fay L. Chapman
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                                    Name:    Fay L. Chapman
                                    Title:   Senior Executive Vice President