Exhibit (b)

                                CERTIFICATIONS

                CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350
                       AS ADOPTED PURSUANT TO SECTION 906
                        OF THE SARBANES-OXLEY ACT OF 2002

I, Jimmy D. Gambill, Chief Executive Officer of the FRANKLIN CUSTODIAN FUNDS,
INC. (the "Registrant"), certify, pursuant to 18 U.S.C. Section 1350 as adopted
pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to my
knowledge:

      1.    The periodic report on Form N-CSR of the Registrant for the period
            ended 03/31/06 (the "Form N-CSR") 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 Form N-CSR fairly presents, in all
            material respects, the financial condition and results of operations
            of the Registrant.

Dated: May 22, 2006

                                    /S/JIMMY D. GAMBILL
                                    Chief Executive Officer - Finance
                                    and Administration




                CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350
                       AS ADOPTED PURSUANT TO SECTION 906
                        OF THE SARBANES-OXLEY ACT OF 2002

I, Galen G. Vetter,  Chief Financial  Officer of the FRANKLIN  CUSTODIAN  FUNDS,
INC. (the "Registrant"),  certify, pursuant to 18 U.S.C. Section 1350 as adopted
pursuant  to  Section  906  of  the  Sarbanes-Oxley  Act of  2002,  that,  to my
knowledge:

      1.    The periodic  report on Form N-CSR of the  Registrant for the period
            ended   03/31/06  (the  "Form   N-CSR")  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 Form N-CSR fairly presents, in all
            material respects, the financial condition and results of operations
            of the Registrant.

Dated:  May 22, 2006

                                    /S/GALEN G. VETTER
                                    Chief Financial Officer