2021 Pac-12 Conference Leaders Opponent Penalties - Games in August/September Only through 01/10/2022
| Name | G | Pen. | Yards | Pen./G | Yards/G | |
|---|---|---|---|---|---|---|
| 1 | USC | 4 | 36 | 325 | 9.0 | 81.3 |
| 2 | Stanford | 4 | 31 | 315 | 7.8 | 78.8 |
| 3 | Oregon | 4 | 38 | 281 | 9.5 | 70.3 |
| 4 | Utah | 4 | 31 | 277 | 7.8 | 69.3 |
| 5 | Washington | 4 | 27 | 259 | 6.8 | 64.8 |
| 6 | Oregon State | 4 | 29 | 252 | 7.3 | 63.0 |
| 7 | Colorado | 4 | 24 | 239 | 6.0 | 59.8 |
| 8 | Arizona | 4 | 24 | 225 | 6.0 | 56.3 |
| 9 | California | 4 | 25 | 223 | 6.3 | 55.8 |
| 10 | Arizona State | 4 | 22 | 198 | 5.5 | 49.5 |
| 11 | Washington State | 4 | 22 | 183 | 5.5 | 45.8 |
| 12 | UCLA | 4 | 19 | 115 | 4.8 | 28.8 |