2021 Mountain West Conference Leaders Opponent Penalties - Games in August/September Only through 01/10/2022
| Name | G | Pen. | Yards | Pen./G | Yards/G | |
|---|---|---|---|---|---|---|
| 1 | Boise State | 4 | 32 | 251 | 8.0 | 62.8 |
| 2 | Fresno State | 5 | 30 | 221 | 6.0 | 44.2 |
| 3 | Hawai'i | 5 | 29 | 255 | 5.8 | 51.0 |
| 4 | San Diego State | 4 | 28 | 258 | 7.0 | 64.5 |
| 4 | Colorado State | 4 | 28 | 213 | 7.0 | 53.3 |
| 6 | San Jose State | 4 | 24 | 233 | 6.0 | 58.3 |
| 7 | UNLV | 4 | 23 | 204 | 5.8 | 51.0 |
| 8 | New Mexico | 4 | 22 | 202 | 5.5 | 50.5 |
| 8 | Utah State | 4 | 22 | 169 | 5.5 | 42.3 |
| 10 | Wyoming | 4 | 20 | 152 | 5.0 | 38.0 |
| 11 | Air Force | 4 | 18 | 157 | 4.5 | 39.3 |
| 12 | Nevada | 3 | 12 | 106 | 4.0 | 35.3 |