2025 Big Ten Conference Leaders Opponent Penalties - Games in August/September Only through 12/06/2025
| Name | G | Pen. | Yards | Pen./G | Yards/G | |
|---|---|---|---|---|---|---|
| 1 | Michigan State | 4 | 27 | 184 | 6.8 | 46.0 |
| 2 | Illinois | 5 | 30 | 272 | 6.0 | 54.4 |
| 3 | UCLA | 4 | 22 | 194 | 5.5 | 48.5 |
| 4 | Rutgers | 5 | 27 | 238 | 5.4 | 47.6 |
| 5 | Ohio State | 4 | 21 | 164 | 5.3 | 41.0 |
| 5 | Washington | 4 | 21 | 155 | 5.3 | 38.8 |
| 7 | Purdue | 4 | 20 | 217 | 5.0 | 54.3 |
| 7 | Wisconsin | 4 | 20 | 192 | 5.0 | 48.0 |
| 9 | Minnesota | 4 | 19 | 158 | 4.8 | 39.5 |
| 10 | USC | 5 | 23 | 216 | 4.6 | 43.2 |
| 10 | Oregon | 5 | 23 | 146 | 4.6 | 29.2 |
| 12 | Nebraska | 4 | 18 | 134 | 4.5 | 33.5 |
| 13 | Maryland | 4 | 17 | 163 | 4.3 | 40.8 |
| 14 | Penn State | 4 | 15 | 117 | 3.8 | 29.3 |
| 14 | Iowa | 5 | 19 | 142 | 3.8 | 28.4 |
| 16 | Indiana | 5 | 18 | 147 | 3.6 | 29.4 |
| 17 | Northwestern | 4 | 14 | 128 | 3.5 | 32.0 |
| 18 | Michigan | 4 | 10 | 68 | 2.5 | 17.0 |