2021 Mountain West Conference Leaders Passing Defense - Games in August/September Only through 01/10/2022
| Name | G | Att | Comp | Pct. | Yards | Yards/Att | TD | Int | Rating | Att/G | Yards/G | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Wyoming | 4 | 138 | 78 | 56.5 | 746 | 5.4 | 4 | 6 | 102.80 | 34.5 | 186.5 |
| 2 | San Diego State | 4 | 187 | 104 | 55.6 | 975 | 5.2 | 9 | 6 | 108.88 | 46.8 | 243.8 |
| 3 | New Mexico | 4 | 154 | 79 | 51.3 | 1000 | 6.5 | 7 | 6 | 113.06 | 38.5 | 250.0 |
| 4 | Air Force | 4 | 121 | 62 | 51.2 | 802 | 6.6 | 6 | 3 | 118.32 | 30.3 | 200.5 |
| 5 | Nevada | 3 | 77 | 49 | 63.6 | 448 | 5.8 | 2 | 1 | 118.48 | 25.7 | 149.3 |
| 6 | San Jose State | 4 | 134 | 76 | 56.7 | 837 | 6.2 | 5 | 0 | 121.50 | 33.5 | 209.3 |
| 7 | Boise State | 4 | 107 | 60 | 56.1 | 832 | 7.8 | 5 | 7 | 123.74 | 26.8 | 208.0 |
| 8 | Hawai'i | 5 | 196 | 107 | 54.6 | 1365 | 7.0 | 9 | 4 | 124.16 | 39.2 | 273.0 |
| 9 | Fresno State | 5 | 143 | 77 | 53.8 | 1024 | 7.2 | 7 | 1 | 128.75 | 28.6 | 204.8 |
| 10 | Colorado State | 4 | 136 | 85 | 62.5 | 956 | 7.0 | 6 | 1 | 134.63 | 34.0 | 239.0 |
| 11 | Utah State | 4 | 132 | 80 | 60.6 | 1045 | 7.9 | 7 | 4 | 138.55 | 33.0 | 261.3 |
| 12 | UNLV | 4 | 140 | 102 | 72.9 | 1236 | 8.8 | 13 | 4 | 171.95 | 35.0 | 309.0 |