CERTIFICATION

            Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

      Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (subsections (a)
and (b) of section 1350, chapter 63 of title 18, United States Code), each of
the undersigned officers of The Hartford Mutual Funds, Inc. does hereby certify,
to such officer's knowledge, that:

      The annual report on Form N-CSR of The Hartford Mutual Funds, Inc. for the
      period ended April 30, 2005 (the "Form N-CSR") fully complies with the
      requirements of Section 13(a) or 15(d) of the Securities Exchange Act of
      1934 and information contained in the Form N-CSR fairly presents, in all
      material respects, the financial condition and results of operations of
      the Fund.

Date: June 15, 2005                              By: /s/David M. Znamierowski
                                                     ------------------------
                                                     David M. Znamierowski
                                                     Its: President

Date: June 15, 2005                              By: /s/Tamara L. Fagely
                                                     -------------------
                                                     Tamara L. Fagely
                                                     Its: Vice President,
                                                     Controller and Treasurer

A signed original of this written statement required by Section 906 has been
provided to The Hartford Mutual Funds, Inc. and will be retained by The Hartford
Mutual Funds, Inc. and furnished to the Securities and Exchange Commission or
its staff upon request.