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                                                             EXHIBIT 99.906.CERT

                                 CERTIFICATIONS

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


Each of the undersigned below certifies that:

     1.   This report on Form N-CSR of Lord Abbett U.S. Government & Government
          Sponsored Enterprises Money Market Fund, Inc. (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 issuer.


Date:  February 23, 2006


                                 By:  /s/ Robert S. Dow
                                     ------------------------------------------
                                     Robert S. Dow
                                     Chief Executive Officer,
                                     Chairman and President


                                 By:  /s/ Joan A. Binstock
                                     ------------------------------------------
                                     Joan A. Binstock
                                     Chief Financial Officer and Vice President

A SIGNED ORIGINAL OF THIS WRITTEN STATEMENT REQUIRED BY SECTION 906, OR OTHER
DOCUMENT AUTHENTICATING, ACKNOWLEDGING, OR OTHERWISE ADOPTING THE SIGNATURE THAT
APPEARS IN TYPED FORM WITHIN THE ELECTRONIC VERSION OF THIS WRITTEN STATEMENT
REQUIRED BY SECTION 906, HAS BEEN PROVIDED TO THE REGISTRANT AND WILL BE
RETAINED BY THE REGISTRANT AND FURNISHED TO THE SECURITIES AND EXCHANGE
COMMISSION OR ITS STAFF UPON REQUEST.

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                                 CERTIFICATIONS

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


Each of the undersigned below certifies that:

     1.   This report on Form N-CSR of Lord Abbett U.S. Government & Government
          Sponsored Enterprises Money Market Fund, Inc. (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 issuer.


Date:  February 23, 2006


                                 By:  /s/ Robert S. Dow
                                     ------------------------------------------
                                     Robert S. Dow
                                     Chief Executive Officer,
                                     Chairman and President


                                 By:  /s/ Joan A. Binstock
                                     ------------------------------------------
                                     Joan A. Binstock
                                     Chief Financial Officer and Vice President