2018 Mountain West Conference Leaders Fumbles Lost - Games in August/September Only through 01/07/2019
| Name | G | Fumbles | Fumbles Lost | Fumble Lost % | |
|---|---|---|---|---|---|
| 1 | San Jose State | 4 | 5 | 1 | 20.00 |
| 2 | Wyoming | 5 | 3 | 2 | 66.67 |
| 2 | San Diego State | 4 | 4 | 2 | 50.00 |
| 2 | Fresno State | 4 | 5 | 2 | 40.00 |
| 2 | Boise State | 4 | 9 | 2 | 22.22 |
| 6 | New Mexico | 4 | 5 | 3 | 60.00 |
| 7 | UNLV | 4 | 6 | 4 | 66.67 |
| 7 | Hawai'i | 6 | 7 | 4 | 57.14 |
| 7 | Nevada | 5 | 7 | 4 | 57.14 |
| 7 | Colorado State | 5 | 8 | 4 | 50.00 |
| 11 | Air Force | 4 | 7 | 5 | 71.43 |
| 11 | Utah State | 4 | 7 | 5 | 71.43 |