| Year: | 2021 |
| Team: | Dartmouth Big Green |
| Sport: | football |
| Conference: | Ivy League |
| Short Conf: | Ivy |
| Record: | 9–1 |
| Conf Record: | 6–1 |
| Statsrank: | 20 |
| Fcscoachrank: | 23 |
| Head Coach: | Buddy Teevens |
| Hc Year: | 21st |
| Off Coach: | Kevin Daft |
| Oc Year: | 4th |
| Off Scheme: | Option |
| Def Coach: | Don Dobes |
| Dc Year: | 11th |
| Def Scheme: | 4–3 |
| Stadium: | Memorial Field |
| Champion: | Ivy League co-champion |
| Prev Year: | 2019 |
The 2021 Dartmouth Big Green football team represented Dartmouth College in the 2021 NCAA Division I FCS football season as a member of the Ivy League. The team was led by 21st-year head coach Buddy Teevens and played its home games at Memorial Field. Dartmouth averaged 5,480 fans per game.