EXHIBIT 23.1 CONSENT OF INDEPENDENT CERTIFIED PUBLIC ACCOUNTANTS The Board of Directors and Stockholders Donaldson, Lufkin & Jenrette, Inc. We consent to incorporation by reference in the registration statements (No. 33-80771, No. 333-07657, No. 333-34149, and No. 333-40925) on Form S-3 and in the registration statement (No. 333-20655) on Form S-8 of Donaldson, Lufkin & Jenrette, Inc. of our report dated February 2, 1998 relating to the consolidated statements of financial condition of Donaldson, Lufkin & Jenrette, Inc. and Subsidiaries as of December 31, 1997 and 1996, and the related consolidated statements of income, changes in stockholders' equity, and cash flows for each of the years in the three-year period ended December 31, 1997, and the related schedule, which report appears in the December 31, 1997 annual report on Form 10-K of Donaldson, Lufkin & Jenrette, Inc. /s/ KPMG PEAT MARWICK LLP New York, New York March 27, 1998