2025 Big Ten Conference Leaders Opponent Penalties - Games in August/September Only through 08/31/2025
| Name | G | Pen. | Yards | Pen./G | Yards/G | |
|---|---|---|---|---|---|---|
| 1 | Maryland | 1 | 7 | 77 | 7.0 | 77.0 |
| 2 | Indiana | 1 | 9 | 65 | 9.0 | 65.0 |
| 3 | USC | 1 | 6 | 60 | 6.0 | 60.0 |
| 3 | Wisconsin | 1 | 5 | 60 | 5.0 | 60.0 |
| 5 | Illinois | 1 | 8 | 59 | 8.0 | 59.0 |
| 6 | Northwestern | 1 | 5 | 55 | 5.0 | 55.0 |
| 7 | Oregon | 1 | 7 | 54 | 7.0 | 54.0 |
| 8 | Ohio State | 1 | 6 | 50 | 6.0 | 50.0 |
| 9 | Minnesota | 1 | 4 | 45 | 4.0 | 45.0 |
| 10 | Rutgers | 1 | 6 | 37 | 6.0 | 37.0 |
| 11 | Michigan State | 1 | 5 | 21 | 5.0 | 21.0 |
| 12 | Washington | 1 | 5 | 20 | 5.0 | 20.0 |
| 12 | Nebraska | 1 | 4 | 20 | 4.0 | 20.0 |
| 14 | Purdue | 1 | 3 | 18 | 3.0 | 18.0 |
| 15 | UCLA | 1 | 3 | 15 | 3.0 | 15.0 |
| 15 | Iowa | 1 | 3 | 15 | 3.0 | 15.0 |
| 17 | Penn State | 1 | 3 | 14 | 3.0 | 14.0 |
| 18 | Michigan | 1 | 1 | 5 | 1.0 | 5.0 |