QuickLinks -- Click here to rapidly navigate through this document

Exhibit 32.1

BRAUN CONSULTING, INC.
CERTIFICATION PURSUANT TO
18 U.S.C. SECTION 1350,
AS ADOPTED PUSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

        In connection with the Quarterly Report of Braun Consulting, Inc. (the "Company") on Form 10-Q for the quarter ended June 30, 2003, as filed with the Securities and Exchange Commission on the date hereof (the "Report"), I, Steven J. Braun, Chairman of the Board and Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. ss. 1350, as adopted pursuant to ss. 906 of the Sarbanes-Oxley Act of 2002, that:

(1)

The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and



(2)

The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/  STEVEN J. BRAUN Steven J. Braun
Chairman of the Board and Chief Executive Officer
August 14, 2003

QuickLinks

Exhibit 32.1