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:  333-103927-01


        Merrill Lynch Mortgage Investors Trust
        Mortgage Pass-Through Certificates
        Series MLCC 2003-B

     (Exact name of registrant as specified in its charter)


   New York                                         54-2105548
                                                    54-2105549
  (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, Maryland                                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.

  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.










                                   PART I

  Item 1.  Business.

            Omitted.

  Item 2.  Properties.

            See Item 15(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 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 A-1                           13
             Class A-2                            3
             Class A-R                            1
             Class B-1                            3
             Class B-2                            5
             Class B-3                            3
             Class B-4                            3
             Class B-5                            3
             Class B-6                            3
             Class X-A1                           1
             Class X-A2                           1
             Class X-B                            3

             Total:                              42


  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 15(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.

  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) Exhibits

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

     (99.1) Annual Independent Accountants' Servicing Reports concerning
            servicing activities for the year ended December 31, 2003.

       <TABLE>

       
         <c>
       a) Cendant Mortgage Corp, as Servicer <F1>
       </TABLE>

     (99.2) Report of Management as to Compliance with Minimum Servicing
            Standards for the year ended December 31, 2003.

       <TABLE>

       
        <c>
       a) Cendant Mortgage Corp, as Servicer <F1>
       </TABLE>

     (99.3) Annual Statements of Compliance under the Pooling and Servicing
            Agreements for the year ended December 31, 2003.

       <TABLE>

       
         <c>
       a) Cendant Mortgage Corp, as Servicer <F1>
       </TABLE>


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


   (b)  On November 10, 2003, December 9, 2003, and January 9, 2004 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.

	On November 10, 2003 a Form 8K/A was filed for the April 2003 distribution.

   (c) Not applicable.


   (d) Omitted.

  <F1> Filed herewith.






                                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:



     Merrill Lynch Mortgage Investors Trust
     Mortgage Pass-Through Certificates
     Series MLCC 2003-B
     (Registrant)



  Signed: Merrill Lynch Mortgage Investors Inc. as Depositor


  By:     Matthew Whalen, Chairman and President

  By: /s/ Matthew Whalen, Chairman and 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.


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


  I, Matthew Whalen, 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 Merrill Lynch Mortgage Investors Trust Mortgage Pass-Through
     Certificates, Series 2003-B 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. Based on my knowledge and upon the annual compliance statement
     included in the report and required to be delivered to the trustee in
     accordance with the terms of the pooling and servicing, or similar,
     agreement, and except as disclosed in the reports, the servicer has
     fulfilled its obligations under the 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 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:
     Cendant Mortgage Corporation as Servicer and Wells Fargo Bank, N.A.
     as Trustee.

     Date: March 30, 2004

     /s/ Matthew Whalen
     Signature

     Chairman and President
     Title

  Ex-99.1 (a)

Deloitte   (logo)

Deloitte & Touche LLP
Third Floor
750 College Road East
Princeton, NJ 08540
USA

Tel: +1 609 514 3600
Fax: +1 609 514 3603

INDEPENDENT ACCOUNTANTS' REPORT

To Cendant Mortgage Corporation:

We have examined management's assertion that Cendant Mortgage Corporation (the
Company) has complied as of and for the year ended December 31, 2003, with its
established minimum servicing standards described in the accompanying Management
Assertion Report. 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 its 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 the Company's compliance with its 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 all material respects based on the criteria set
forth in Appendix I.

/s/ Deloitte & Touche

February 23, 2004

APPENDIX I

MINIMUM SERVICING STANDARDS AS SET FORTH IN THE MORTGAGE BANKERS ASSOCIATION OF
AMERICA'S UNIFORM SINGLE ATTESTATION PROGRAM FOR MORTGAGE BANKERS

I. CUSTODIAL BANK ACCOUNTS

   1. Reconciliations shall be prepared on a monthly basis for all custodial
      bank accounts and related bank clearing accounts. These reconciliations
      shall:

      * be mathematically accurate;
      * be prepared within forty-five (45) calendar days after the cutoff date;
      * be reviewed and approved by someone other than the person who prepared
        the reconciliation; and
      * document explanations for reconciling items. These reconciling items
        shall be resolved within ninety (90) calendar days of their original
        identification.

   2. Funds of the servicing entity shall be advanced in cases where there is an
      overdraft in an investor's or a mortgagor's account.

   3. Each custodial account shall be maintained at a federally insured
      depository institution in trust for the applicable investor.

   4. Escrow funds held in trust for a mortgagor shall be returned to the
      mortgagor within thirty (30) calendar days of payoff of the mortgage loan.

II. MORTGAGE PAYMENTS

   1. Mortgage payments shall be deposited into the custodial bank accounts and
      related bank clearing accounts within two business days of receipt.

   2. Mortgage payments made in accordance with the mortgagor's loan documents
      shall be posted to the applicable mortgagor records within two business
      days of receipt.

   3. Mortgage payments shall be allocated to principal, interest, insurance,
      taxes or other escrow items in accordance with the mortgagor's loan
      documents.

   4. Mortgage payment identified as loan payoffs shall be allocated in
      accordance with the mortgagor's loan documents.

III. DISBURSEMENTS

    1. Disbursements made via wire transfer on behalf of mortgagor or investor
       shall be made only by authorized personnel.

    2. Disbursements made on behalf of a mortgagor or investor shall be posted
       within two business days to the mortgagor's or investor's records
       maintained by the servicing entity.

    3. Tax and insurance payments shall be made on or before the penalty or
       insurance policy expiration dates, as indicated on tax bills and
       insurance premium notices, respectively, provided that such support has
       been received by the servicing entity at least thirty (30) calendar days
       prior to these dates.

    4. Any late payment penalties paid in conjunction with the payment of any
       tax bill or insurance premium notice shall be paid from the servicing
       entity's funds and not charged to the mortgagor, unless the late payment
       was due to the mortgagor's error or omission.

    5. Amounts remitted to investors per the servicer's investor reports shall
       agree with cancelled checks, or other form of payment, or custodial bank
       statements.

    6. Unused checks shall be safeguarded so as to prevent unauthorized access.

IV. INVESTOR ACCOUNTING AND REPORTING

    1. The servicing entity's investor reports shall agree with, or reconcile
       to, investors' records on a monthly basis as to the total unpaid
       principal balance and number of loans serviced by the servicing entity.

V. MORTGAGOR LOAN ACCOUNTING

   1. The servicing entity's mortgage loan records shall agree with or reconcile
      to, the records of mortgagors with respect to the unpaid principal balance
      on a monthly basis.

   2. Adjustments on ARM loans shall be computed based on the related mortgage
      note and any ARM rider.

   3. Escrow accounts shall be analyzed, in accordance with the mortgagor's loan
      documents, on at least an annual basis.

   4. Interest on escrow accounts shall be paid, or credited, to mortgagors in
      accordance with the applicable state laws.

VI. Delinquencies

    1. Records documenting collection efforts shall be maintained during the
       period a loan is in default and shall be updated at least monthly. Such
       records shall describe the entity's activities in monitoring delinquent
       loans including, for example, phone calls, letters and mortgage payment
       rescheduling plans in cases where the delinquency is deemed temporary
       (e.g., illness or unemployment).

VII. INSURANCE POLICIES

    1. A fidelity bond and errors and omissions policy shall be in effect on the
       servicing entity throughout the reporting period in the amount of
       coverage represented to investors in management's assertion.





  Ex-99.2 (a)

Cendant Mortgage
3000 Leadhenhall Rd.
Mt. Laurel, NJ 08054

CENDANT   (logo)
Mortgage

As of and for the year ended December 31, 2003, Cendant Mortgage Corporation
(the Company) 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,
the Company had in effect a fidelity bond and errors and omissions policy in the
amount of $140 million and $20 million, respectively.


Cendant Mortgage Corporation


/s/ Terence W. Edwards
Terence W. Edwards
President and Chief Executive Officer


/s/ Mark Danahy
Mark Danahy
Senior Vice President & Chief Financial Officer

/s/ Martin L. Foster
Martin L. Foster
Senior Vice President-Loan Servicing


  EX-99.3 (a)

Cendant Mortgage
4001 Leadenhall Rd
Mt. Laurel, NJ 08054

(logo) Cendant Mortgage


Wells Fargo Bank, N.A.
9062 Old Annapolis Rd.
Columbia, MD 21045
Attention: Master Servicing

RE: Officer's Certificate

Dear Trustee:

The undersigned Officer certifies the following for the 2003 fiscal year:


(A) I have 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 and to
the best of these Officers' knowledge, the Servicer has fulfilled all of its
duties, responsibilities or obligations under these Agreements throughout such
year, or if there has been a default or failure of the servicer to perform any
of such duties, responsibilities or obligations, a description of each default
or failure and the nature and status thereof has been reported to Wells Fargo
Bank, N.A.;


(B) I have confirmed that the Servicer is currently an approved FNMA or FHLMC
servicer in good standing;


(C) I have confirmed that the Fidelity Bond, the Errors and Omissions Insurance
Policy and any other bonds required under the terms of the Servicing Agreement,
Trust Agreement, Pooling and Servicing Agreement and/or Seller/Servicer Guide
are in full force and effect;


(D) All premiums for each Hazard Insurance Policy, Flood Insurance Policy (if
applicable) and Primary Mortgage Insurance Policy (if applicable), with respect
to each Mortgaged PropertY, have been paid and that all such insurance policies
are in full force and effect;

(E) All real estate taxes, governmental assessments and any other expenses
accrued and due, that if not paid could result in a lien or encumbrance on any
Mortgaged Property, have been paid, or if any such costs or expenses have not
been paid with respect to any Mortgaged Property, the reason for the non-payment
has been reported to Wells Fargo Bank, N.A.;


(F) All Custodial Accounts have been reconciled and are properly funded; and


(G) All annual reports of Foreclosure and Abandonment of Mortgage Property
required per section 6050H, 6050J and 6050P of the Internal Revenue Code,
respectively, have been prepared and filed.


Certified By:



/s/ Marc. J. Hinkle
Marc J. Hinkle
Officer

Vice President of Servicing
Title

March 26, 2004
Date







  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                            8,696,651.33         60,827,941.83                 0.00             730,682,058.16
   A-2                            3,491,085.71         19,212,625.81                 0.00             230,787,374.19
   A-R                                    0.25                100.00                 0.00                       0.00
   B-1                              162,067.58                  0.00                 0.00              11,286,000.00
   B-2                              171,652.39                  0.00                 0.00               8,598,000.00
   B-3                               96,566.94                  0.00                 0.00               4,837,000.00
   B-4                               58,577.68                  0.00                 0.00               2,686,000.00
   B-5                               46,866.52                  0.00                 0.00               2,149,000.00
   B-6                               82,089.48                  0.00                 0.00               3,764,101.16
   X-A1                           8,092,862.66                  0.00                 0.00                       0.00
   X-A2                           1,811,915.45                  0.00                 0.00                       0.00
   X-B                              108,841.54                  0.00                 0.00                       0.00
   </TABLE>