Gary Mann is listed in the credits for the following albums:
| Year | Artist | Album | Role |
|---|---|---|---|
| 1980 | Barnabas | Hear the Light | Songwriter, Bass |
| 1982 | Barnabas | Find Your Heart a Home | Songwriter, Bass, Keyboards |
| 1983 | Barnabas | Approaching Light Speed | Songwriter, Bass, Keyboards |
| 1984 | Barnabas | Feel the Fire | Songwriter, Bass, Keyboards, Background Vocals |
| 1986 | Barnabas | Little Foxes | Songwriter, Bass, Keyboards |
| 1992 | Barnabas | Gospel According To Barnabas | Songwriter, Bass, Keyboards, Background Vocals |
| 2000 | Barnabas | Artifacts and Relics | Songwriter, Bass, Keyboards |
