Rob Hajacos is listed in the credits for the following albums:
| Year | Artist | Album | Role |
|---|---|---|---|
| 1991 | Paul Overstreet | Heroes | Fiddle |
| 1991 | Margo Smith and Holly | Just the Beginning | Fiddle |
| 1993 | Pam Thum | Pam Thum | Violin |
| 1993 | Michael Anderson | Saints and Sinners | Fiddle |
| 1993 | Bruce Carroll | Walk On | Fiddle |
| 1994 | Michael Card | Poiema | Fiddle |
| 1995 | Brent Lamb | No Excuses, No Regrets | Fiddle |
| 1995 | Russ Taff | Winds of Change | Fiddle |
| 1996 | Jackson Finch | Experience | Violin |
| 2000 | Robin Crow | Electric Cinema | Violin |
