                                                         SECURITIES AND EXCHANGE COMMISSION
                                     450 Fifth Street, NW
                                     Washington, DC  20549

                        ------------------------------------------

                                          FORM 8-K
                                       CURRENT REPORT

                           Pursuant to Section 13 or 15(d) of the
                              Securities Exchange Act of 1934

                              For the Month of November, 2001


                              MORTGAGE PASS-THROUGH CERTIFICATES,
                                     SERIES:  2001-ms11
                 (Exact name of the registrant as specified in charter)

                 Delaware                333-67140-04        94-2528990
               (State or other         (Commission          (IRS Employer
               jurisdiction of         File Number)         Identification
               Incorporation)                               Number)


                                   75 NORTH FAIRWAY DRIVE
                                   VERNON HILLS, IL  60061

                         (Address of principal executive offices)

                    Registrant's telephone number, including area code:

                                      (847) 549-6500



ITEM 5.

     See Exhibit 99, the Distribution Report for the Month of November, 2001,
attached hereto.

ITEM 7.

    FINANCIAL STATEMENTS, PRO FORMA FINANCIAL INFORMATION, AND EXHIBITS:


     EXHIBITS:

     A.   (null), Mortgage Pass-Through Certificates,
          SERIES:  2001-ms11 , Monthly Distribution Report for November 2001.

                                SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant has duly caused this report to be signed on its behalf by the
undersigned hereunto duly authorized.

Dated:    November 16, 2001

                                  WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
                                              (Registrant)

                                              By:
                                                    ------------------
                                                    RICHIE MOORE
                                                    SECOND VICE PRESIDENT

450 Fifth Street, NW

Washington, DC 20549

------------------------------------------

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the

Securities Exchange Act of 1934

For the Month of October, 2001

MORTGAGE PASS-THROUGH CERTIFICATES,

SERIES: 2001-ms11

(Exact name of the registrant as specified in charter)

Delaware 333-72879-20 94-2528990

(State or other (Commission (IRS Employer

jurisdiction of File Number) Identification

Incorporation) Number)

75 NORTH FAIRWAY DRIVE

VERNON HILLS, IL 60061

(Address of principal executive offices)

Registrant's telephone number, including area code:

(847) 549-6500

ITEM 5.

See Exhibit 99, the Distribution Report for the Month of October, 2001,

attached hereto.

ITEM 7.

FINANCIAL STATEMENTS, PRO FORMA FINANCIAL INFORMATION, AND EXHIBITS:

EXHIBITS:

A. (null), Mortgage Pass-Through Certificates,

SERIES: 2001-ms11 , Monthly Distribution Report for October 2001.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the

registrant has duly caused this report to be signed on its behalf by the

undersigned hereunto duly authorized.

Dated: November 7, 2001

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.

(Registrant)

By:

------------------

RICHIE MOORE

SECOND VICE PRESIDENT

Filing Compare · WASHINGTON MUTUAL MSC MORT PASS THROUGH CERT SER 2001-MS11