| Year: | 2021 |
| Team: | Northern Arizona Lumberjacks |
| Sport: | football |
| Conference: | Big Sky Conference |
| Short Conf: | Big Sky |
| Record: | 5–6 |
| Conf Record: | 4–4 |
| Head Coach: | Chris Ball |
| Hc Year: | 3rd |
| Off Coach: | Aaron Pflugrad |
| Oc Year: | 4th |
| Def Coach: | Jerry Partridge |
| Dc Year: | 3rd |
| Stadium: | Walkup Skydome |
The 2021 Northern Arizona Lumberjacks football team represented Northern Arizona University as a member of the Big Sky Conference during the 2021 NCAA Division I FCS football season. They were led by third-year head coach Chris Ball and played their home games at the Walkup Skydome.
On July 26, 2021, during the virtual Big Sky Kickoff, the Lumberjacks were predicted to finish seventh in the Big Sky by both the coaches and media.[1]
| 1 | Weber State | (7) | |
| 2 | Montana | (3) | |
| 3 | Eastern Washington | (2) | |
| 4 | Montana State | (1) | |
| 5 | Sacramento State | (1) | |
| 6 | UC Davis | ||
| 7 | Northern Arizona | ||
| 8 | Idaho | ||
| 9 | Idaho State | ||
| 10 | Portland State | ||
| 11 | Southern Utah | ||
| 12 | Cal Poly | ||
| 13 | Northern Colorado |
| 1 | Weber State | (14) | |
| 2 | Montana | (4) | |
| 3 | Eastern Washington | (3) | |
| 4 | Montana State | (3) | |
| 5 | Sacramento State | ||
| 6 | UC Davis | ||
| 7 | Northern Arizona | ||
| 8 | Idaho | ||
| 9 | Idaho State | ||
| 10 | Portland State | ||
| 11 | Southern Utah | ||
| 12 | Northern Colorado | ||
| 13 | Cal Poly |
The Lumberjacks had two players selected to the preseason all-Big Sky team.
Defense
Morgan Vest – S
Special teams
Luis Aguilar – K
See also: 2021 Sam Houston Bearkats football team.
See also: 2021 South Dakota Coyotes football team.
See also: 2021 Arizona Wildcats football team.
See also: 2021 Northern Colorado Bears football team.
See also: 2021 Idaho State Bengals football team.
See also: 2021 Southern Utah Thunderbirds football team and Grand Canyon Rivalry.
See also: 2021 Sacramento State Hornets football team.
See also: 2021 Idaho Vandals football team.
See also: 2021 UC Davis Aggies football team.
See also: 2021 Montana Grizzlies football team.
See also: 2021 Cal Poly Mustangs football team.