| Sport: | football |
| Year: | 2021 |
| Team: | UNLV Rebels |
| Conference: | Mountain West Conference |
| Short Conf: | MW |
| Record: | 2–10 |
| Conf Record: | 2–6 |
| Head Coach: | Marcus Arroyo |
| Hc Year: | 2nd |
| Off Coach: | Glenn Thomas |
| Oc Year: | 2nd |
| Off Scheme: | Multiple |
| Def Coach: | Peter Hansen |
| Dc Year: | 2nd |
| Def Scheme: | 4–3 |
| Stadium: | Allegiant Stadium |
The 2021 UNLV Rebels football team represented the University of Nevada, Las Vegas in the 2021 NCAA Division I FBS football season. The Rebels were led by second–year head coach Marcus Arroyo and played their home games at Allegiant Stadium. They were members of the West Division of the Mountain West Conference.
The Mountain West media days were held on July 21–22, 2021, at the Cosmopolitan in Paradise, Nevada.
The preseason poll was released on July 21, 2021. The Rebels were predicted to finish in sixth place in the MW West Division.[1]
| 1 | Nevada | 141 (19) | |
| 2 | San Jose State | 121 (5) | |
| 3 | San Diego State | 96 | |
| 4 | Fresno State | 85 (1) | |
| 5 | Hawaii | 56 | |
| 6 | UNLV | 26 |
| 1 | Boise State | 148 (23) | |
| 2 | Wyoming | 115 (2) | |
| 3 | Air Force | 104 | |
| 4 | Colorado State | 72 | |
| 5 | Utah State | 47 | |
| 6 | New Mexico | 39 |
See also: 2021 Eastern Washington Eagles football team.
See also: 2021 Arizona State Sun Devils football team.
See also: 2021 Iowa State Cyclones football team.
See also: 2021 Fresno State Bulldogs football team.
See also: 2021 UTSA Roadrunners football team.
See also: 2021 Utah State Aggies football team.
See also: 2021 San Jose State Spartans football team.
See also: 2021 Nevada Wolf Pack football team and Fremont Cannon.
See also: 2021 New Mexico Lobos football team.
See also: 2021 Hawaii Rainbow Warriors football team.
See also: 2021 San Diego State Aztecs football team.
See also: 2021 Air Force Falcons football team.