Bob Hardy is listed in the credits for the following albums:
| Year | Artist | Album | Role |
|---|---|---|---|
| 1979 | Servant | Shallow Water | Percussion, Lead Vocals |
| 1981 | Servant | Rockin' Revival | Percussion, Lead Vocals |
| 1982 | Servant | World of Sand | Lead and Background Vocals |
| 1983 | Servant | Caught in the Act of Loving Him | Lead Vocals |
| 1984 | Servant | Light Maneuvers | Vocals |
