2018 Mountain West Conference Leaders Passing Defense - Games in August/September Only through 01/07/2019
| Name | G | Att | Comp | Pct. | Yards | Yards/Att | TD | Int | Rating | Att/G | Yards/G | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Utah State | 4 | 115 | 62 | 53.9 | 681 | 5.9 | 3 | 5 | 103.56 | 28.8 | 170.3 |
| 2 | Fresno State | 4 | 113 | 56 | 49.6 | 769 | 6.8 | 5 | 8 | 107.16 | 28.3 | 192.3 |
| 3 | Boise State | 4 | 108 | 66 | 61.1 | 786 | 7.3 | 4 | 2 | 130.77 | 27.0 | 196.5 |
| 4 | UNLV | 4 | 129 | 62 | 48.1 | 842 | 6.5 | 6 | 1 | 116.69 | 32.3 | 210.5 |
| 5 | Wyoming | 5 | 193 | 127 | 65.8 | 1279 | 6.6 | 10 | 3 | 135.46 | 38.6 | 255.8 |
| 6 | Colorado State | 5 | 128 | 81 | 63.3 | 1290 | 10.1 | 13 | 4 | 175.20 | 25.6 | 258.0 |
| 7 | Nevada | 5 | 168 | 97 | 57.7 | 1296 | 7.7 | 12 | 3 | 142.54 | 33.6 | 259.2 |
| 8 | San Diego State | 4 | 124 | 81 | 65.3 | 1090 | 8.8 | 8 | 2 | 157.22 | 31.0 | 272.5 |
| 9 | Hawai'i | 6 | 182 | 108 | 59.3 | 1676 | 9.2 | 14 | 3 | 158.78 | 30.3 | 279.3 |
| 10 | Air Force | 4 | 131 | 90 | 68.7 | 1131 | 8.6 | 9 | 2 | 160.85 | 32.8 | 282.8 |
| 11 | New Mexico | 4 | 139 | 77 | 55.4 | 1194 | 8.6 | 7 | 8 | 132.67 | 34.8 | 298.5 |
| 12 | San Jose State | 4 | 204 | 122 | 59.8 | 1516 | 7.4 | 13 | 7 | 136.39 | 51.0 | 379.0 |