EXHIBIT 99


                    CERTIFICATION OF CHIEF EXECUTIVE OFFICER
                      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 ANNUAL REPORT OF ROWAN COMPANIES, INC. (THE "COMPANY") ON
FORM 10-K FOR THE YEAR ENDED DECEMBER 31, 2002, AS FILED WITH THE SECURITIES AND
EXCHANGE COMMISSION ON THE DATE HEREOF (THE "REPORT"), I, C. R. PALMER, CHIEF
EXECUTIVE OFFICER OF THE COMPANY, CERTIFY, PURSUANT TO 18 U.S.C. SS.1350, AS
ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002, THAT, TO THE
BEST OF MY KNOWLEDGE:

     (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 COMPANY FOR THE PERIODS PRESENTED.



DATE:    MARCH 27, 2003                 /S/ C. R. PALMER
                                        ---------------------------------------
                                        C. R. PALMER
                                        CHAIRMAN AND CHIEF EXECUTIVE OFFICER




                    CERTIFICATION OF CHIEF FINANCIAL OFFICER
                      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 ANNUAL REPORT OF ROWAN COMPANIES, INC. (THE "COMPANY") ON
FORM 10-K FOR THE YEAR ENDED DECEMBER 31, 2002, AS FILED WITH THE SECURITIES AND
EXCHANGE COMMISSION ON THE DATE HEREOF (THE "REPORT"), I, E. E. THIELE, CHIEF
FINANCIAL OFFICER OF THE COMPANY, CERTIFY, PURSUANT TO 18 U.S.C. SS.1350, AS
ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002, THAT, TO THE
BEST OF MY KNOWLEDGE:

     (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 COMPANY FOR THE PERIODS PRESENTED.



DATE:    MARCH 27, 2003                 /S/ E. E. THIELE
                                        ---------------------------------------
                                        E. E. THIELE
                                        SENIOR VICE PRESIDENT - FINANCE,
                                        ADMINISTRATION AND TREASURER
                                        (CHIEF FINANCIAL OFFICER)