1991 staff
| Coach | Role | Since |
|---|---|---|
| Head coach1 | ||
| Kirk Ferentz | Head Coach | 1990 |
| Coordinators2 | ||
| Jack Cosgrove | Offensive Coordinator | 1989 |
| Ray Zingler | Defensive Coordinator | 1990 |
| Position coaches3 | ||
| Bobby Wilder | Assistant Defensive Line | 1991 |
| Rich Nagy | Outside Linebackers · Assistant Coach | 1989 |
| John Bonamego | Assistant Coach | 1988 |
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.