2018 Mountain West Conference Leaders Opponent Penalties - Games in August/September Only through 01/07/2019
| Name | G | Pen. | Yards | Pen./G | Yards/G | |
|---|---|---|---|---|---|---|
| 1 | Air Force | 4 | 34 | 288 | 8.5 | 72.0 |
| 2 | UNLV | 4 | 32 | 287 | 8.0 | 71.8 |
| 3 | Hawai'i | 6 | 42 | 420 | 7.0 | 70.0 |
| 4 | San Jose State | 4 | 31 | 263 | 7.8 | 65.8 |
| 5 | Colorado State | 5 | 39 | 325 | 7.8 | 65.0 |
| 6 | New Mexico | 4 | 30 | 252 | 7.5 | 63.0 |
| 7 | Wyoming | 5 | 42 | 298 | 8.4 | 59.6 |
| 8 | Utah State | 4 | 25 | 216 | 6.3 | 54.0 |
| 9 | Nevada | 5 | 32 | 264 | 6.4 | 52.8 |
| 10 | Fresno State | 4 | 21 | 171 | 5.3 | 42.8 |
| 11 | Boise State | 4 | 20 | 153 | 5.0 | 38.3 |
| 12 | San Diego State | 4 | 20 | 141 | 5.0 | 35.3 |