UNITED STATES
                         SECURITIES AND EXCHANGE COMMISSION
                               WASHINGTON, D.C. 20549



                                      FORM 10-K


  (Mark one)

  /X/ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
      EXCHANGE ACT OF 1934
      For the fiscal year ended December 31, 2002

      OR



  / / TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
      EXCHANGE ACT OF 1934


      Commission File Number:  333-74308-16


        Wells Fargo Asset Securities Corporation
        Mortgage Pass-Through Certificates
        Series 2002-12 Trust

       (Exact name of registrant as specified in its charter)



   New York                                       16-1616446
                                                  16-1616447
  (State or other jurisdiction of                 (I.R.S. Employer
  incorporation or organization)                  Identification No.)

   c/o Wells Fargo Bank Minnesota, N.A.
   9062 Old Annapolis Road
   Columbia, MD                                21045
  (Address of principal executive offices)     (Zip Code)


  Registrant's telephone number, including area code: (410) 884-2000


  Securities registered pursuant to Section 12(b) of the Act:

       NONE.



  Securities registered pursuant to Section 12(g) of the Act:

       NONE.



  Indicate by check mark whether the registrant (1) has filed all reports
  required to be filed by Section 13 or 15(d) of the Securities Exchange
  Act of 1934 during the preceding 12 months (or for such shorter period
  that the registrant was required to file such reports), and (2) has been
  subject to such filing requirements for the past 90 days.

      Yes  X       No ___







  Indicate by check mark if disclosure of delinquent filers pursuant to
  Item 405 of Regulation S-K ( 229.405 of this chapter) is not contained
  herein, and will not be contained, to the best of registrant's knowledge,
  in definitive proxy or information statements incorporated by reference
  in Part III of this Form 10-K or any amendment to this Form 10-K.

         Not applicable.






  State the aggregate market value of the voting and non-voting common
  equity held by non-affiliates of the registrant. The aggregate market
  value shall be computed by reference to the price at which the common
  equity was sold, or the average bid and asked prices of such common
  equity, as of a specified date within 60 days prior to the date of
  filing. (See definition of affiliate in Rule 405, 17 CFR 230.405.)

         Not applicable.








  Indicate the number of shares outstanding of each of the registrant's
  classes of common stock, as of the latest practicable date.

         Not applicable.



  List hereunder the following documents if incorporated by reference and
  the Part of the Form 10-K (e.g. Part I, Part II, etc..) into which the
  document is incorporated: (1)Any annual report to security holders; (2)
  Any proxy or information statement; and (3)Any prospectus filed pursuant
  to Rule 424(b) or (c) under the Securities Act of 1933. The listed
  documents should be clearly described for identification purposes (e.g.
  annual report to security holders for fiscal year ended December 24, 1980).

         Not applicable.










                                 PART I

  Item 1.  Business.

            Omitted.

  Item 2.  Properties.

            See Item 14(a), Exhibits 99.1, 99.2, and 99.3, for information
            provided in lieu of information required by Item 102 of
            Regulation S-K.



  Item 3.  Legal Proceedings.

            The registrant knows of no material pending legal proceedings
            involving the trusts created under the Pooling and Servicing
            Agreement (the Trusts), the Trustee, the Servicer or the
            registrant with respect to the Trusts other than routine
            litigation incidental to the duties of the respective parties.





  Item 4.  Submission of Matters to a Vote of Security Holders.


            None.

                               PART II


  Item 5.  Market for registrant's Common Equity and Related Stockholder
           Matters.


            No established public trading market for the Certificates exists.

            Records provided to the Trust by the DTC and the Trustee
            indicate that as of December 31, 2002, the number of holders of
            record for each class of Certificate were as follows:


             Class A-1                         1
             Class A-2                         2
             Class A-3                         1
             Class A-4                         4
             Class A-6                        14
             Class A-8                         1
             Class A-9                         2
             Class A-LR                        1
             Class A-PO                        1
             Class A-R                         1
             Class B-1                         1
             Class B-2                         1
             Class B-3                         1
             Class B-4                         1
             Class B-5                         1
             Class B-6                         1

             Total:                           34


  Item 6.  Selected Financial Data.

            Omitted.


  Item 7.  Management's Discussion and Analysis of Financial Condition and
           Results of Operation.

            Omitted.


  Item 7A. Quantitative and Qualitative Disclosures about Market Risk.

            Not applicable.

  Item 8.  Financial Statements and Supplementary Data.

            See Item 14(a), Exhibits 99.1, 99.2, 99.3, for information
            provided in lieu of information required by Item 302 of
            Regulation S-K.




  Item 9.  Changes in and Disagreements with Accountants on Accounting and
           Financial Disclosure.

            None.


                               PART III


  Item 10. Directors and Executive Officers of the Registrant.

            Not applicable.


  Item 11. Executive Compensation.

            Not applicable.


  Item 12. Security Ownership of Certain Beneficial Owners and Management.

            Not applicable.


  Item 13. Certain Relationships and Related Transactions.

            Not applicable.

  Item 14. Controls and Procedures.

            Not applicable.

                               PART IV


  Item 15. Exhibits, Financial Statement Schedules, and Reports on Form 8-K.

   (a) Exhibits

    (99.1) Annual Independent Accountants' Servicing Reports concerning
           servicing activities for the year ended December 31, 2002.

       <TABLE>

       
        <c>
       a) Colonial Savings, F.A., as Servicer <F2>
       b) Hibernia National Bank, as Servicer <F1>
       c) Homeside Lending Inc (TX), as Servicer <F1>
       d) Sun Trust Mortgage Inc, as Servicer <F1>
       e) Wells Fargo Home Mortgage, Inc, as Servicer <F2>
       </TABLE>

    (99.2) Report of Management as to Compliance with Minimum Servicing
           Standards for the year ended December 31, 2002.

       <TABLE>

       
        <c>
       a) Colonial Savings, F.A., as Servicer <F2>
       b) Hibernia National Bank, as Servicer <F1>
       c) Homeside Lending Inc (TX), as Servicer <F1>
       d) Sun Trust Mortgage Inc, as Servicer <F1>
       e) Wells Fargo Home Mortgage, Inc, as Servicer <F2>
       </TABLE>

    (99.3) Annual Statements of Compliance under the Pooling and Servicing
           Agreements for the year ended December 31, 2002.

       <TABLE>

       
         <c>
       a) Colonial Savings, F.A., as Servicer <F2>
       b) Hibernia National Bank, as Servicer <F1>
       c) Homeside Lending Inc (TX), as Servicer <F1>
       d) Sun Trust Mortgage Inc, as Servicer <F1>
       e) Wells Fargo Home Mortgage, Inc, as Servicer <F2>
       </TABLE>


    (99.4) Aggregate Statement of Principal and Interest Distributions to
           Certificate Holders.

    (99.5) Reliance Certifications Mandated under the Pooling and Servicing
           Agreement for the year ended December 31, 2002.

       a) Colonial Savings, F.A., as Servicer <F3>
       b) Hibernia National Bank, as Servicer <F3>
       c) Homeside Lending Inc (TX), as Servicer <F4>
       d) Sun Trust Mortgage Inc, as Servicer <F3>
       e) Wells Fargo Home Mortgage, Inc, as Servicer <F3>


   (b)  On November 07, 2002, December 10, 2002, and January 06, 2003
        reports on Form 8-K were filed by the Company in order to provide
        the statements for the monthly distributions to holders of the
        Certificates. No other reports on Form 8-K have been filed during
        the last quarter of the period covered by this report.





   (c) Not applicable.


   (d) Omitted.

  <F1> Such document (i) is not filed herewith since such document was not
  received by the reporting person at least three business days prior to
  the due date covered by this report, and (ii) will be included in an
  amendment to this report on Form 10-K/A to be filed within 30 days of the
  Reporting Person's receipt of such document.

  <F2> Filed Herewith.

  <F3> Certification has been received.

  <F4> Certification has not been received.



                               SIGNATURES


  Pursuant to the requirements of Section 13 or 15(d) of the Securities
  Exchange Act of 1934, the registrant has duly caused this report to be
  signed on its behalf by the undersigned, thereunto duly authorized:



    Wells Fargo Asset Securities Corporation
    Mortgage Pass-Through Certificates
    Series 2002-12 Trust
    (Registrant)



  Signed:  Wells Fargo Bank Minnesota, N.A., as Master Servicer


  By:   Nancy E. Burgess as Vice President

  By: /s/  Nancy E. Burgess

  Dated: March 13, 2003

  Sarbanes-Oxley Certification


I, Nancy E. Burgess, certify that:


1.   I have reviewed this annual report on Form 10-K, and all reports on Form
     8-K containing distribution or servicing reports filed in respect of
     periods included in the year covered by this annual report, of Wells Fargo
     Asset Securities Corporation Mortgage Pass-Through Certificates Series
     2002-12 Trust;

2.   Based on my knowledge, the information in these reports, taken as a whole,
     does not contain any untrue statement of a material fact or omit to state a
     material fact necessary to make the statements made, in light of the
     circumstances under which such statements were made, not misleading as of
     the last day of the period covered by this annual report;

3.   Based on my knowledge, the distribution or servicing information required
     to be provided to the trustee by the servicer under the pooling and
     servicing, or similar, agreement, for inclusion in these reports is
     included in these reports;

4.   I am responsible for reviewing the activities performed by the master
     servicer under the pooling and servicing, or similar, agreement and based
     upon my knowledge and the annual compliance review required under that
     agreement, and except as disclosed in the reports, the master servicer has
     fulfilled its obligations under that agreement; and

5.   The reports disclose all significant deficiencies relating to the
     servicer's compliance with the minimum servicing standards based upon the
     report provided by an independent public accountant, after conducting a
     review in compliance with the Uniform Single Attestation Program for
     Mortgage Bankers or similar procedure, as set forth in the pooling and
     servicing, or similar, agreement, that is included in these reports.

     In giving the certifications above, I have reasonably relied on
     information provided to me by the following unaffiliated parties: Colonial
     Savings, F.A., as Servicer, Hibernia National Bank, as Servicer, Homeside
     Lending Inc (TX), as Servicer, and Sun Trust Mortgage Inc, as Servicer.



      Date: 3/28/03


      /s/ Nancy E. Burgess
      Signature


      Vice President
      Title







  SUPPLEMENTAL INFORMATION TO BE FURNISHED WITH REPORTS FILED PURSUANT TO
  SECTION 15(d) OF THE ACT BY REGISTRANTS WHICH HAVE NOT REGISTERED
  SECURITIES PURSUANT TO SECTION 12 OF THE ACT.



  (a)(i) No annual report is provided to the Certificateholders other than
  with respect to aggregate principal and interest distributions.


  (a)(ii) No proxy statement, form of proxy or other proxy soliciting
  material has been sent to any Certificateholder with respect to any
  annual or other meeting of Certificateholders.

  Ex-99.1 (a)

PRICEWATERHOUSECOOPERS    (logo)

PricewaterhouseCoopers LLP
301 Commerce Street
City Center Tower II
Suite 1900
Fort Worth TX 76102-4183
Telephone (817) 810 9998
Facsimile (817) 877 2260
          (817) 332 2710

Report of Independent Accountants

To the Board of Directors and Stockholder
Colonial Savings, F.A.
Fort Worth, Texas

We have examined management's assertion about Colonial Savings, F.A.
("Colonial") compliance with the minimum servicing standards identified in the
Mortgage Bankers Association of America's Uniform Single Attestation Program
for Mortgage Bankers ("USAP") as of and for the year ended September 30, 2002
included in the accompanying management assertion (Exhibit I). Management is
responsible for Colonial's compliance with those minimum servicing standards.
Our responsibility is to express an opinion on management's assertion about
Colonial's compliance based on our examination.

Our examination was made in accordance with attestation standards established
by the American Institute of Certified Public Accountants and, accordingly,
included examining, on a test basis, evidence about Colonial's compliance with
the minimum servicing standards and performing such other procedures as we
considered necessary in the circumstances. We believe that our examination
provides a reasonable basis for our opinion. Our examination does not provide a
legal determination on Colonial's compliance with the minimum servicing
standards.

In our opinion, management's assertion that Colonial complied with the
aforementioned minimum servicing standards as of and for the year ended
September 30, 2002 is fairly stated, in all material respects.

/s/ PricewaterhouseCoopers LLP

December 10, 2002

  Ex-99.1 (e)

KPMG  (logo)

2500 Ruan Center
666 Grand Avenue
Des Moines, IA 50309

INDEPENDENT ACCOUNTANTS' REPORT

The Board of Directors
Wells Fargo Home Mortgage:

We have examined management's assertion dated February 25, 2003 that Wells
Fargo Home Mortgage complied with the minimum servicing standards set forth in
the Mortgage Bankers Association of America's Uniform Single Attestation Program
for Mortgage Bankers (USAP) as of and for the year ended December 31, 2002.
Management is responsible for Wells Fargo Home Mortgage's compliance with
those minimum standards.  Our responsibility is to express an opinion on
management's assertion about Wells Fargo Home Mortgage's compliance based on
our examination.

Our examination was conducted in accordance with attestation standards
established by the American Institute of Certified Public Accountants and,
accordingly, included examining, on a test basis, evidence about Wells Fargo
Home Mortgage's compliance with the minimum servicing standards specified above
and performing such other procedures as we considered necessary in the
circumstances. We believe that our examination provides a reasonable basis for
our opinion. Our examination does not provide a legal determination on Wells
Fargo Home Mortgage's compliance with the minimum servicing standards.

In our opinion, management's assertion that Wells Fargo Home Mortgage complied
with the aforementioned minimum servicing standard as of and for the year ended
December 31, 2002, is fairly stated, in all material respects.

/s/ KPMG LLP

February 25, 2003

KPMG LLP. KPMG LLP, a U.S. limited liability partnership, is a member of KPMG
International, a Swiss association.


  Ex-99.2 (a)

COLONIAL
SAVINGS     (logo)

Management's Assertion Concerning Compliance
with USAP Minimum Servicing Standards

December 10, 2002

As of and for the year ended September 30, 2002, Colonial Savings, F.A. has
complied in all material respects with the minimum servicing standards set
forth in the Mortgage Bankers Association of America's Uniform Single
Attestation Program for Mortgage Bankers ("USAP").

As of and for this same period, Colonial Savings, F.A. had in effect a fidelity
bond and errors and omissions policy in the amount of $8,000,000.

/s/ Jim E. DuBose
Jim E. DuBose
President, Chief Executive Officer


/s/ Donna Dempsey
Donna Dempsey
Executive Vice President, Chief Financial Officer

2626A West Freeway, Fort Worth, Texas 76102 Office: 817-390-2000
www.colonialsavings.com


  Ex-99.2 (e)

Wells Fargo
Home Mortgage     (logo)

1 Home Campus
Des Moines, IA 50328-0001


Management Assertion

As of and for the year ended December 31, 2002, Wells Fargo Home Mortgage Inc.
has complied in all material respects with the minimum servicing standards set
forth in the Mortgage Bankers Association of America's Uniform Single
Attestation Program for Mortgage Bankers.  As of and for this same period,
Wells Fargo Home Mortgage Inc. had in effect a fidelity bond along with an
errors and omissions policy in the amounts of $100 million and $20 million,
respectively.

/s/ Pete Wissinger               February 25, 2003
Pete Wissinger
Chief Executive Officer

/s/ Michael J. Heid              February 25, 2003
Michael J. Heid
Executive Vice President

/s/ Robert Caruso                February 25, 2003
Robert Caruso
Senior Vice President
Loan Servicing


  Ex-99.3 (a)

COLONIAL
SAVINGS     (logo)

ANNUAL CERTIFICATE FOR THE
Wells Fargo Bk MN, NA
Investor # 3146, 3164, 3173, 3532, 3337, 3409, 3531, 3743

In accordance with the Sale and Servicing Agreement for the referenced program,
I, the undersigned, hereby certify as to each mortgage loan being serviced by
the below named institution that as of the preceding anniversary date of the
agreement:

1. As an "Officer" of the below named institution as such term is defined in the
   Agreement and being authorized to issue this Annual Certificate.

2. All real estate taxes and special assessments of any nature, relating to the
   mortgage loans, have been paid as and when due.

3. The insurance policies are fully paid and comply with the Agreement.

4. Analysis has been made to insure sufficient monies are being collected in
   escrow for the current year.

5. All inspections have been made as required by the Agreement.

It is further certified that,

To the best of my knowledge and upon reasonable investigation, the servicing of
the mortgage loans during the year preceding the last Anniversary date of the
Agreement has been conducted in compliance with the Agreement except for such
exceptions as have been set forth below:

EXCEPTIONS: (if any)_________________________________

A review of activities with respect to performance under the Agreement during
the year preceding the last anniversary date of the Agreement has been made
under my supervision and to the best of my knowledge, based on such review, no
default exists as of the below date in the fulfillment of any obligations
under the Agreement other than the events of default, if any, which have been
listed below with the nature and status thereof:

EVENTS OF DEFAULT: (if any):___________________________

PARTICIPANT: COLONIAL SAVINGS, F.A.

SIGNED: /s/ Cary W. Adams
TITLE: Cary W. Adams, Senior Vice President
DATED: December 21, 2002


2626A West Freeway, Fort Worth, Texas 76102  Office: 817-390-2000
www.colonialsavings.com

  Ex-99.3 (e)

Wells Fargo
Home Mortgage    (logo)

One Home Campus
Des Moines, IA 50328-0001


March 31, 2003


Re: 2002 Annual Certification

We hereby certify to the best of our knowledge and belief that for the calendar
year of 2002:

1. All real estate taxes, bonds assessments and other lienable items have
been paid.

2. All FHA mortgage insurance, private mortgage insurance premiums, and flood
insurance have been paid (if applicable).

3. Hazard insurance policies held by us meet the requirements as specified in
the servicing agreement, or those of a normal prudent lender if not specified,
and those premiums due have been paid.

4. We have made all property inspections as required.

5. Fidelity bond and Errors and Omissions insurance coverage currently exits.

6. That the Officer signing this certificate has reviewed the activities and
performance of the Servicer during the preceding fiscal year under the terms of
the Servicing Agreement, Trust Agreement, Pooling and Servicing Agreement
and/or Seller/Servicer Guide or similar agreements and to the best of this
officer's knowledge, the Servicer has fulfilled all of its duties,
responsibilities or obligations of such agreement throughout the year, or if
there has been a default or failure of the servicer to perform any such duties,
responsibilities or obligations, a description of each default or failure and
the nature and status has been reported.

Sincerely,

/s/ John B. Brown
John B. Brown
Vice President
Wells Fargo Home Mortgage Inc.



  Ex-99.4
   Schedule of Year-To-Date Principal and Interest Distributions to
   Certificateholders


   <TABLE>

   Class                            Interest          Principal               Losses            Ending Balance
   
                      <c>                   <c>                 <c>                <c>
   A-1                         2,478,262.64         3,103,878.37                0.00             92,485,660.64
   A-2                           635,167.26         1,939,923.94                0.00             57,803,537.06
   A-3                         1,872,598.48                 0.00                0.00                      0.00
   A-4                         2,101,422.47        71,841,058.98                0.00              5,158,941.02
   A-5                           363,896.60        25,174,000.00                0.00                      0.00
   A-6                           872,726.17         (872,726.17)                0.00             27,369,726.16
   A-7                            28,165.03         5,200,000.00                0.00                      0.00
   A-8                           487,405.03                 0.00                0.00             15,000,000.00
   A-9                         1,147,026.52                 0.00                0.00             35,300,000.00
   A-LR                                0.27                50.00                0.00                      0.00
   A-PO                                0.00            85,124.36                0.00                736,078.66
   A-R                                 0.27                50.00                0.00                      0.00
   B-1                           159,008.00            24,904.34                0.00              4,879,095.67
   B-2                            62,481.31             9,786.01                0.00              1,917,213.98
   B-3                            45,426.22             7,114.79                0.00              1,393,885.20
   B-4                            17,055.10             2,671.22                0.00                523,328.78
   B-5                            22,696.90             3,554.86                0.00                696,445.14
   B-6                            17,063.91             2,672.59                0.00                523,599.12
   </TABLE>