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, 2003

      OR



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


      Commission File Number:  333-90830-02


        Asset Backed Funding Corporation
        Mortgage Loan Asset Backed Certificates
        Series 2003-WF1

     (Exact name of registrant as specified in its charter)


   New York                                         54-2116949
                                                    54-2116950
                                                    54-2116951
                                                    54-2116952
  (State or other jurisdiction of                   (I.R.S. Employer
  incorporation or organization)                    Identification No.)

   c/o Wells Fargo Bank, 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 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.



  Indicate by check mark whether the registrant is an accelerated filer
  (as defined in Exchange Act Rule 12b-2).

       Yes ___       No X



  State the aggregate market value of the voting and non-voting common
  equity held by non-affiliates computed by reference to the price at which
  the common equity was last sold, or the average bid and asked price of
  such common equity, as of the last business day of the registrant's most
  recently completed second fiscal quarter.


         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.




                             Introductory Note

  This Annual Report on Form 10-K is prepared in reliance on the no-action
  letter dated March 26, 1993 issued by the Securities and Exchange Commission
  to Nomura Asset Securities Corporation.





                                   PART I

  Item 1.  Business.

            Omitted.


  Item 2.  Properties.

             Omitted.


  Item 3.  Legal Proceedings.

            The registrant knows of no material pending legal proceedings
            involving the trust created under the Pooling and Servicing
            Agreement (the Trust), the Trustee, the Servicer or the
            registrant with respect to the Trust 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, 2003, the number of holders of
            record for each class of Certificate were as follows:


             Class A1                             3
             Class A2                            15
             Class CE                             1
             Class M1                             3
             Class M2                             4
             Class M3                             6
             Class M4                             5
             Class P                              1
             Class R                              1

             Total:                              39


  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.

            Omitted.


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

            None.

  Item 9A. Controls and Procedures.

            Not applicable.



                            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. Principal Accounting Fees and Services.

            Not applicable.






                             PART IV


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

    (a)  Not Applicable


    (b)  Monthly distribution date statements were filed as exhibits to Form 8-K
         on October 3, 2003, November 5, 2003 and December 2, 2003.

    (c)
	4.1  Pooling and Servicing Agreement (filed as an exhibit to Form 8-K on
        April 8, 2003).

        31.1	Rule 13a-14(a)/15d-14(a) Certification.

        99.1	Annual Independent Public Accountants Servicing Report concerning
                servicing activities for the year ended December 31, 2003.

        99.2	Annual Statement as to Compliance under the Pooling and Servicing
                Agreement for the year ended December 31, 2003.


    (d)  Not Applicable




                                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:



     Asset Backed Funding Corporation
     Mortgage Loan Asset Backed Certificates
     Series 2003-WF1
     (Registrant)



  Signed: Asset Backed Funding Corporation as Depositor


  By:     George Ellison, President

  By: /s/ George Ellison, President

  Dated: March 30, 2004



  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.






Exhibit Index


Exhibit No.

4.1	Pooling and Servicing Agreement (filed as an exhibit to Form 8-K
        on April 8, 2003).

31.1	Rule 13a-14(a)/15d-14(a) Certification.


99.1	Annual Independent Public Accountants Servicing Report concerning servicing
        activities for the year ended December 31, 2003.


99.2	Annual Statement as to Compliance under the Pooling and Servicing Agreement
        for the year ended December 31, 2003.




Ex-31.1 Sarbanes-Oxley Certification

  I, George Ellison, certify, in connection with that certain Pooling and
  Servicing Agreement (the "Pooling and Servicing Agreement"),dated as of
  March 1, 2003, among Asset Backed Funding Corporation, as depositor (the
  "Depositor"), Wells Fargo Bank Minnesota, National Association, as
  securities administrator (the "Securities Administrator"), and Bank One N.A.,
  trustee (the "Trustee"), that I am the senior officer of the Depositor in
  charge of its securitizations, and 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 Asset Backed Funding Corporation (the "Depositor") relating to above-
     referenced 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 Securities Administrator by the Servicer
     under the Pooling and Servicing Agreement referred to above for inclusion
     in these reports is included in these reports;

  4. Based on my knowledge and upon the annual compliance statement
     included in the report and required to be delivered to the Securities
     Administrator in accordance with the terms of the Pooling and Servicing
     Agreement, and except as disclosed in the report, the servicer has
     fulfilled its obligations under the Pooling and Servicing 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 standard, as set forth in
     the Pooling and Servicing Agreement that is included in these reports.

     In giving the certifications above, I have reasonably relied on the
     information provided to me by the following unaffiliated parties:
     Wells Fargo Home Mortgage, Inc. as Servicer, and Wells Fargo Bank,
     National Association, as Securities Administrator.

     Capitalized terms used but not defined herein have the meanings ascribed
     to them in the Pooling and Servicing Agreement.

     Date: March 30, 2004

     /s/ George Ellison
     Signature

     President
     Title



Ex-99.1


KPMG   (logo)

KPMG LLP
2500 Ruan Center
666 Grand Avenue
Des Moines, IA 50309

Independent Accountants' Report

The Board of Directors
Wells Fargo Home Mortgage, Inc.:

We have examined management's assertion dated February 25, 2004 that Wells Fargo
Home Mortgage, Inc. (the Company) 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, 2003. Management is responsible for the Company's compliance with
those minimum servicing standards. Our responsibility is to express an opinion
on management's assertion about the Company'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 the Company'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 the Company's compliance
with the minimum servicing standards.

In our opinion, management's assertion that the Company complied with the
aforementioned minimum servicing standards as of and for the year ended December
31, 2003, is fairly stated, in a11 material respects.


/s/ KPMG LLP

February 25, 2004

KPMG LLP a US limited liability partnership, is the US
member of KPMG international a Swiss corporation




(Logo) WELLS FARGO HOME MORTGAGE

Management Assertion

As of and for the year ended December 31, 2003, Wells Fargo Home Mortgage, Inc,
has complied in all material respects with the minimum servicing standards set
forth in the Mortgage Bankers of America's Uniform Single Attestation Program
for Mortgage Bankers. As of and for this same period, Wel1s Fargo Home Mortgage,
Inc. had in effect a fidelity bond along with an errors and omissions policy in
the amounts of $lOO million and $20 million, respectively.

/s/ Pete Wissinger
February 25, 2004
Pete Wissinger
Chief Executive Officer

/s/ Michael J. Heid
February 25, 2004
Michael J. Heid
Executive Vice President

/s/ Michael Lepore
February 25, 2004
Michael Lepore
Executive Vice President
Loan Servicing

/s/ Robert Caruso
February 25, 2004
Robert Caruso
Executive Vice President
Servicing Operations






Ex-99.2

Wells Fargo Home Mortgage (logo)

One Home Campus
Des Moines, IA 50328-0001
515-213-5469
515-213-7121 Fax


January 30, 2004

Re: 2003 Annual Certification

We hereby certify to the best of our knowledge and belief that for the calendar
year of 2003:

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 exists.

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 of such duties, responsibility
or obligations, a description of each default or failure and the nature and
status thereof has been reported.

Sincerely,

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