Merrill Lynch & Co., Inc.
                                                   95 Greene Street
                                                   Jersey City, New Jersey 07302

                                                   July 30, 2003

[LOGO] MERRILL LYNCH

OFICS Filer Support
SEC Operations Center
6432 General Green Way
Alexandria, Virginia 22312-2413

Attention: 1933 Act Filing Desk

Re: Registration Statement No. 333-105098

With reference to the above captioned Registration Statement and in compliance
with Rule 424(b)(3) adopted under the Securities Act of 1933, as amended, we
enclose herewith for filing, one copy, marked as required, one Prospectus and
Prospectus Supplement dated June 3, 2003 relating to Merrill Lynch & Co., Inc.
Medium-Term Notes to be used on and after this date. In addition, please
reference that this note is not listed on any exchange.

                                       Very truly yours,

                                       /s/ Mark Youngclaus

                                       Mark Youngclaus
                                       Vice President

PROSPECTUS SUPPLEMENT                                        File No. 333-105098
(To Prospectus Supplement and                                     Rule 424(b)(3)
Prospectus dated June 3, 2003)
Prospectus number: 2319

                            Merrill Lynch & Co., Inc.
                           Medium Term Notes, Series B
                   Due Nine Months or More from Date of Issue

                                Fixed Rate Notes

Principal Amount:         $25,000,000

Issue Price:              100.00%

CUSIP Number:             59018YRG8

Interest Rate:             2.7125% per annum

Original Issue Date:      June 27,  2003

Stated Maturity Date:     June 27,  2008

Interest Payment Dates:   Each June 27th and December 27th, commencing on
                          December 27, 2003, until maturity, subject to
                          following business day convention.

Repayment at the Option
of the Holder:            The Notes cannot be repaid prior to the Stated
                          Maturity Date.

Redemption at the Option
of the Company:           The Notes cannot be redeemed prior to the Stated
                          Maturity Date.

Form:                     The Notes are being issued in fully registered
                          book-entry form.

Trustee:                  JPMorgan Chase Bank

Dated:                    June 13,  2003