Prospectus Supplement filed under Rule 424(b)(3)
                                                      Registration No. 333-45569

                              Prospectus Supplement

     The Prospectus dated February 4, 1998 relating to the offer for resale of
up to $250,000,000 aggregate principal amount of The Interpublic Group of
Companies, Inc.'s 1.80% Convertible Subordinated Notes due September 16, 2004 is
hereby supplemented to include the following information in the "Selling
Securityholders" table in the Prospectus Supplement dated February 25, 1998:


                                                          Principal Amount
                                                        of Registered Notes
                                                        -------------------
                   Selling Holders
                   ---------------
Merrill Lynch P.F.S. Inc................................      $480,000.00
- --------------------------------------------------------      -----------
Total of Above..........................................      $480,000.00
                                                              ===========









                This Prospectus Supplement is dated June 2, 1999.