2021 Mountain West Conference Leaders Fumbles Lost - Games in August/September Only through 01/10/2022
| Name | G | Fumbles | Fumbles Lost | Fumble Lost % | |
|---|---|---|---|---|---|
| 1 | Nevada | 3 | 1 | 0 | 0.00 |
| 2 | Wyoming | 4 | 4 | 1 | 25.00 |
| 3 | Air Force | 4 | 3 | 1 | 33.33 |
| 3 | New Mexico | 4 | 6 | 2 | 33.33 |
| 5 | Boise State | 4 | 5 | 2 | 40.00 |
| 6 | Hawai'i | 5 | 11 | 5 | 45.45 |
| 7 | Colorado State | 4 | 6 | 3 | 50.00 |
| 7 | San Diego State | 4 | 6 | 3 | 50.00 |
| 9 | San Jose State | 4 | 6 | 4 | 66.67 |
| 9 | Fresno State | 5 | 9 | 6 | 66.67 |
| 11 | UNLV | 4 | 2 | 2 | 100.00 |
| 11 | Utah State | 4 | 2 | 2 | 100.00 |