Exhibit 6(b)
                           SUB-DISTRIBUTOR'S AGREEMENT
                                     BETWEEN
                       ▇▇▇▇▇▇▇▇▇▇▇ FUNDS DISTRIBUTOR, INC.
                                       AND
                          MML INVESTORS SERVICES, INC.
  Date: September 8, 1994
  MML INVESTORS SERVICES, INC.
  One Financial Plaza
  ▇▇▇▇ ▇▇▇▇ ▇▇▇▇▇▇
  ▇▇▇▇▇▇▇▇▇▇▇, ▇▇ ▇▇▇▇▇-▇▇▇▇
           ▇▇▇▇▇▇▇▇▇▇▇ FUNDS DISTRIBUTOR, INC., a New York corporation ("OFDI")
  acts as the distributor (the "Distributor") for the various series of
  MassMutual Institutional Funds, a Massachusetts business trust, which is an
  investment company registered under the Investment Company Act of 1940 (the
  "Fund"), the various classes of shares of which have been registered under the
  Securities Act of 1933 to be offered for sale to the public in a continuous
  public offering in accordance with the terms and conditions set forth in the
  Prospectus and Statement of Additional Information of such fund included in
  such fund's Registration Statement, as it may be amended from time to time
  (the "Fund Shares").
           OFDI desires to have MML Investors Services, Inc. ("MMLISI") act as
  OFDI's Sub-Distributor for the distribution and sale of Fund Shares. MMLISI
  has advised OFDI that it is willing to act as its Sub-Distributor and Agent,
  and it is accordingly agreed between us as follows:
           1. MMLISI will act as Sub-Distributor for OFDI for the sale of Fund
  Shares according to the terms set forth in the Registration Statement of the
  Fund as such Registration Statement may be amended from time to time.
           2. MMLISI's responsibilities as Sub-Distributor shall include, but
  not be limited to, providing a nationwide system of sales personnel to promote
  and otherwise wholesale sales of Fund Shares, providing a nationwide system of
  service representatives to assist purchasers of Fund Shares, making qualified
  personnel available, either in person, by phone or through the mail, to
  respond to questions regarding Fund Shares asked by purchasers or prospective
  purchasers of Fund Shares, and generally using its best efforts to sell Fund
  Shares.
           In addition MMLISI shall:
           (a)  process completed applications for the purchase of Fund Shares
           submitted to it
 
                by investors,
           (b)  process orders submitted to it by Fund shareholders for the
                purchase of additional Fund Shares,
           (c)  promptly deliver to the Fund's transfer agent any and all
                payments received by it and made in connection with orders for
                Fund Shares (net of any applicable sales charge with respect to
                such order as set forth in the Registration Statement)
                accompanied, in the case of purchases by new investors, by
                proper applications for the purchase of Fund Shares. Purchase
                orders shall be deemed effective at the time and in the manner
                set forth in the Registration Statement,
           (d)  keep available for prospective investors reasonable quantities
                of the Fund's Prospectus relating to Fund Shares, Statement of
                Additional Information, annual and semi-annual reports of the
                Fund, applications for the purchase of Fund Shares and other
                similar materials (including materials relating to the use of
                Fund Shares as a funding medium for qualified plans), and shall
                provide prospective investors with copies of such documents and
                materials upon request, and
           (e)  prepare and distribute sales literature and advertising material
                pertaining to the Fund, as approved by OFDI, in such quantities
                and of such a nature as may reasonably support its best efforts
                to sell Fund Shares. It shall use its best efforts to assure
                that such sales literature and advertising materials comply with
                applicable laws and regulations, and shall promptly furnish to
                OFDI, for OFDI's approval and filing with the National
                Association of Securities Dealers, Inc., any proposed sales
                literature or advertising materials relating to or referring to
                the Fund or Fund Shares.
           3. MMLISI will receive no compensation from OFDI for the sale of Fund
  Shares except as may otherwise be agreed to by OFDI and MMLISI as set forth on
  Exhibit A attached hereto as from time to time amended. OFDI shall not be
  responsible for paying any of the costs associated with MMLISI's performance
  of its duties hereunder or with the sale of the Fund Shares to the public by
  MMLISI.
           4. This Agreement may not be amended or changed except in writing and
  shall be binding upon and inure to the benefit of the parties hereto and their
  respective successors. This Agreement shall not be assigned by either party
  and shall terminate automatically upon assignment. This Agreement may be
  terminated by either party at any time, without penalty, by giving not less
  than 60 days' written notice (which notice may be waived). In addition, OFDI
  may terminate this agreement with respect to the Fund immediately upon notice
  if OFDI should cease to act as Distributor of the Fund. Unless earlier
  terminated, this Agreement shall remain in effect until September 8, 1996, and
  shall continue from year to year thereafter unless terminated by either party
  as described above.
           5. In connection with the distribution of Fund Shares, MMLISI agrees
  to be bound by Sections 8, 9(b), 9(c) & 9(d) of the General Distributor's
  Agreement by and between OFDI and the Fund, as amended from time to time.
           6. MMLISI has notice of the provision of the Fund's Agreement and
  Declaration of Trust dated May 28, 1993, pursuant to which there are
  limitations on the liability of the Fund's Trustees and 
 
  shareholders and understands and agrees that the liabilities of the Fund are
  not binding upon any Trustee or shareholder of the Fund personally but bind
  only the Fund and the Funds' Property.
                                 ▇▇▇▇▇▇▇▇▇▇▇ FUNDS DISTRIBUTOR, INC.
                                 By: /s/ ▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇▇
                                     ------------------------------------------
                                     ▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇▇, Executive Vice President
  Accepted:
  MML INVESTORS SERVICES, INC.
  By: /s/ ▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇▇
      -------------------------------
      ▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇▇
           President and Chief Operating Officer
 
                                   EXHIBIT A
  MMLISI shall be entitled to receive any and all compensation pertaining to
  Fund Shares including 12b-1 fees, which MMLISI is entitled to under its Dealer
  Agreement for the ▇▇▇▇▇▇▇▇▇▇▇ Funds or otherwise.