1991 staff
| Coach | Role | Since |
|---|---|---|
| Head coach1 | ||
| Jim Tressel | Head Coach | 1986 |
| Coordinators2 | ||
| Don Treadwell | Offensive Coordinator | 1991 |
| Mark Snyder | Special Teams Coordinator · Defensive Coordinator · Defensive Backs · Linebackers · Outside Linebackers | 1991 |
| Position coaches1 | ||
| Jon Heacock | Defensive Backs | 1991 |
| Analysts1 | ||
| Doug Phillips | Graduate Assistant | 1991 |
A stint appears in a season when it overlaps it, so a coach hired in 1991 and a coach in their ninth year both show here, each with the full range of their stint.