Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

Merrill Lynch & Co., Inc.

We hereby consent to the use in this Form 11-K Annual Report of our report dated June 18, 2004 (relating to the financial statements of the Merrill Lynch & Co., Inc. 401(k) Savings & Investment Plan) appearing in Item (a) of such Form 11-K.

Deloitte & Touche LLP

New York, New York
June 24, 2004