                                                               EXHIBIT 99
                     WASHINGTON MUTUAL MORTGAGE                              SECURITIES CORP.
                                  MASTERAND SERVICING
                         MORTGAGEEXCHANGE PASS-THROUGH CERTIFICATESCOMMISSION
                             05/2003                                     450 DISTRIBUTIONFifth REPORT

SERIES:  wamuStreet, 2001-ar6                                 WEIGHTED AVERAGE PC RATE:    5.70616%NW
POOL NUMBER:  Group 1 = 1800
____________________________________________________________________________________________

ISSUE DATE:  12/14/2001
CERTIFICATE BALANCE AT ISSUE:    $814                                     Washington,842,698.14

                                                                 CERTIFICATE
                                                   TOTAL         ACCOUNT            CERTIFICATE
                                                   NUMBER OF     ACTIVITY           BALANCE
                                                   MORTGAGES     (@PC RATE)         OUTSTANDING
                                                   _________DC  __________________  __________________20549

BALANCES FROM LAST FISCAL MONTH                        -END:                     382                         $211,100,635.00
PRINCIPAL POOL COLLECTION(S):
Scheduled Principal Collection Due Current Month                      $90,914.18
Unscheduled Principal Collection/Reversals                           $165,225.73
Liquidations-in-full                                      48      $25,188,246.65
Net principal Distributed                                         $25,444,386.56    ($25,444,386.56)

CAPITAL LOSS (PRINCIPAL WRITTEN OFF):                                                          $0.00

BALANCE CURRENT FISCAL MONTH-END:                        334                         $185,656,248.44--------------------------------------

SCHEDULED                                          FORM INTEREST AT MORTGAGE RATE:                               $1,100,734.04

UNSCHEDULED INTEREST AT MORTGAGE RATE:
Unscheduled Interest Collection/Reversals                                  $0.00
Interest Uncollected on Liquidation                                        $0.00
Interest Uncollected on Non8-Earning Assets                                 $0.00K
Net Unscheduled Interest Distributed                                       $0.00

OTHER:
LoanCURRENT Conversion Fees                                                       $0.00REPORT
Expense Reimbursements                                                     $0.00
Gain                           Pursuant onto Liquidations                                                       $0.00
HazardSection Insurance13 Premiumor Refunds                                           $0.00
Net15(d) Otherof Distributions                                                    $0.00the

SCHEDULED SERVICING FEE EXPENSES:                                     $96,754.48

UNSCHEDULED SERVICING FEES:
Unscheduled Service Fee Collections/Reversals                              $0.00
ServicingSecurities FeesExchange UncollectedAct onof Liquidation                                  $0.001934
Servicing Fees Uncollected/Non-Earning Assets                              $0.00
Net                              For Unscheduledthe ServiceMonth Feesof Distributed                                   $0.00

MISCELLANEOUSJune, EXPENSES:                                                    $0.002003

NET                          WAMU FUNDS DISTRIBUTED:                                            $26,448,366.12







                     WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
                                  MASTER SERVICING
                         MORTGAGE PASS-THROUGH CERTIFICATES,
                             05/2003 DISTRIBUTION REPORT

                                     SERIES:  wamu 2001-ar6                                 WEIGHTED AVERAGE PC RATE:    5.70616%
POOL                 (Exact NUMBER:  Groupname 1of =the 1800
____________________________________________________________________________________________


AGGREGATEregistrant LOSSas AMOUNTSspecified FROMin INCEPTION OF POOLcharter)
  Loan Count Of              Aggregate Loss
  Incurred Loss                  Amount
__________________                 Delaware              333-67140-13         _________________94-2528990

                 0                     $0.00
*Aggregate               (State Lossor Amountother         (Commission          (IRS and Count do not include this month's activityEmployer


SUMMARY               jurisdiction OF DISTRIBUTIONS FOR CURRENT CYCLE
     Principal          Scheduledof         Interest        NetFile Interest                            Total
   Distribution       Interest Due       Adjustment       DistributionNumber)         Other          DistributionIdentification
__________________  ________________  ________________  ________________  ________________  ________________               Incorporation)                               Number)

    $25,444,386.56     $1,003,979.56             $0.00     $1,003,979.56             $0.00    $26,448,366.12


INSURANCE                                   75 RESERVES
                         Original         ClaimsNORTH In          Claims           Coverage          Coverage
  InsuranceFAIRWAY Type         Balance          Progress            Paid           Adjustments        RemainingDRIVE
___________________  ________________  ________________  ________________  ________________  ________________

MPI                             $0.00             $0.00             $0.00             $0.00             $0.00
Special                                   VERNON Hazard         $13HILLS,012,306.00             $0.00             $0.00             $0.00    $13,012,306.00
Bankruptcy Bond
   Single-Units           $100,000.00             $0.00             $0.00             $0.00       $100,000.00
   Multi-Units                  $0.00             $0.00             $0.00             $0.00             $0.00
Mortgage Repurchase    $16,296,854.00             $0.00             $0.00             $0.00    $16,296,854.00


DELINQUENT INSTALLMENTS
ONE                          TWO                          THREE
CountIL  Principal Balance     Count  Principal Balance     Count  Principal Balance60061
_____  _________________     _____  _________________     _____  _________________

    4      $3,539,092.22         1        $851,877.81         1        $826,015.20

FOUR                         IN(Address FORECLOSURE               ACQUIRED
Count  Principalof Balance     Count  Principalprincipal Balance     Count  Principalexecutive Balanceoffices)
_____  _________________     _____  _________________     _____  _________________
    1        $826,015.20         0              $0.00         0              $0.00



The                    Registrant's Classtelephone Principal Balances of each Class of the Class B1number, B2,including B3,area B4, B5, B6code:
Certificates immediately after the principal and interest distribution on
05/25/2003                                      (847) are as follows:549-6500




                Class       ClassITEM Principal Balance
                B1                 $7,247,9925.50
                B2                 $4,739,387.85
                B3                 $2,787,794.69
                B4                 $1,114,707.30
                B5                   $557,011.51
                B6                 $1,674,865.26
                              __________________
                Total             $18,121,759.10
                              ==================


Capitalized     See itemsExhibit used99, but not defined herein have the meaningsDistribution ascribedReport to
themfor in the ProspectusMonth Supplement.





                                                                           EXHIBIT 99

                  DELINQUENT* MORTGAGE LOANS (As of April 30June, 2003):

SERIES:  2001-ar6               POOL NUMBER:  Group 1 = 1800

                           I                     II                      III
                     Total Loans In        Total Delinquent        Loans Delinquent
                     Mortgage Pool              Loans                  1 Month
                  --------------------   ---------------------   ---------------------

Dollar Amount:       $185,656,248.44**        $4,390,970.03***        $3,539,092.22***
Number:                         1298                      5                       4
%attached of Pool:                    100hereto.00%                  2.37%                   1.91%
(Dollars)
%ITEM of Pool:                    1007.00%                  0.39%                   0.31%
(No. of Loans)


                           IV                      V                      VI
                    Loans    FINANCIAL Delinquent        LoansSTATEMENTS, Delinquent           LoansPRO In
                        2FORMA Month                 3FINANCIAL Month               Foreclosure
                  --------------------   ---------------------   ---------------------

Dollar Amount:          $851INFORMATION,877.81***                $0.00***                $0.00***
Number:                           1                       0                       0
% ofAND PoolEXHIBITS:                    0.46%                    0.00%                   0.00%
(Dollars)
% of Pool
     EXHIBITS:                    0.08%                    0.00%                   0.00%
(No
     99.   WaMu ofMortgage Loans)


                          VII
                     Loans Acquired
                  Pass--------------------

DollarThrough Amount:                $0.00***Certificates,
Number          SERIES:                           0
%  2001-ar6, ofMonthly Pool:                     0.00%
(Dollars)
%Distribution ofReport Pool:                     0.00%
(No.for ofJune Loans)2003.

*  A Mortgage Loan is considered delinquent in a given month when a payment                                SIGNATURES
due
Pursuant onto the firstrequirements day of the priorSecurities monthExchange hasAct notof been1934, made on or before the
firstregistrant dayhas ofduly suchcaused priorthis month.

**  Reflectsreport theto outstandingbe principalsigned balanceon ofits thebehalf Mortgageby Pool after the
applicationundersigned ofhereunto allduly May 01, 2003 scheduled payments and April 01, 2003
unscheduled payments on the mortgage loansauthorized.

***  ReflectsDated:    June outstanding principal balance of delinquent mortgage loans as of
April 3017, 2003.

Trading                                  WASHINGTON Factor,MUTUAL calculatedMORTGAGE asSECURITIES of distribution date : 0CORP.22784305.
                                              (Registrant)

                                              By multiplying this factor by the original balance of the Mortgage Pool as of:   /s/
the Cut                                                    -Off Date, current outstanding balance of the Mortgage Pool (after-----------------
application                                                    RICHIE of scheduled payments up to and including May 01, 2003, andMOORE
unscheduled                                                    VICE prepayments in months prior to May ) can be calculated.PRESIDENT
Filing Compare · WAMU MORTGAGE PASS THRU CERTIFICATE SERIES 2001-AR6
