EX-99.906CERT

Section 906 Certifications

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

John V. Murphy, Principal Executive Officer, and Brian W. Wixted, Principal
Financial Officer, of Bond Fund Series (the "Registrant"), each certify to the
best of his knowledge that:

1.   The Registrant's periodic report on Form N-CSR for the period ended
     06/30/2007 (the "Form N-CSR") fully complies with the requirements of
     Section 15(d) of the Securities Exchange Act of 1934, as amended; 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. This certification is being furnished to the Commission solely
     pursuant to 18 U.S.C. ss. 1350 and is not being filed as part of the Form
     N-CSR filed with the Commission.

Principal Executive Officer                         Principal Financial Officer

Bond Fund Series                                    Bond Fund Series


By: /s/ John V. Murphy                              By: /s/ Brian W. Wixted
    -----------------------                             ------------------------
    John V. Murphy                                      Brian W. Wixted

Date: 08/08/2007                                    Date: 08/08/2007