Exhibit 32.1

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

In connection with the Quarterly Report of Krupp Insured Plus III Limited
Partnership (the "Partnership") on Form 10-Q for the period ending March 31,
2004 as filed with the Securities and Exchange Commission on the date hereof
(the "Report"), I, Peter F. Donovan, Senior Vice President of Krupp Plus
Corporation, a General Partner of the Partnership, 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 Partnership as of March 31, 2004 (the last date of the period
            covered by the Report).


/s/ Peter F. Donovan
- --------------------
Peter F. Donovan,
Senior Vice President

Date: May 5, 2004


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