CERTIFICATION UNDER SECTION 906 OF SARBANES-OXLEY ACT OF 2002
                                (18 U.S.C. 1350)

In connection with the Semi-Annual Report of Great-West Variable Annuity Account
A (the "Registrant") on Form N-CSR for the period ended June 30, 2005 (the
"Report"), the undersigneds hereby certify, to the best of their knowledge,
that:

1. The Report fully complies with the requirements of Section 13(a) or 15(d) of
the Securities Exchange Act of 1934;

2. The information contained in the Report fairly presents, in all material
respects, the financial condition and results of operations of the Registrant.

Date:   August 24, 2005

By:     /s/ W. T. McCallum
        W.T. McCallum
        President

Date:   August 24, 2005

By:     /s/ G.R. McDonald
        G. R. McDonald
        Treasurer


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This certification is being furnished solely pursuant to Section 906 of the
Sarbanes-Oxley Act of 2002 and is not being filed as part of the report or as a
separate disclosure document.

A signed original 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.