1990 staff
| Coach | Role | Since |
|---|---|---|
| Head coach1 | ||
| Jim Tressel | Head Coach | 1986 |
| Coordinators2 | ||
| Jim Bollman | Offensive Coordinator | 1989 |
| Mark Dantonio | Defensive Coordinator | 1986 |
| Position coaches1 | ||
| Don Treadwell | Assistant Coach | 1986 |
A stint appears in a season when it overlaps it, so a coach hired in 1990 and a coach in their ninth year both show here, each with the full range of their stint.