| Year: | 1921 |
| Team: | Auburn Tigers |
| Sport: | football |
| Conference: | Southern Intercollegiate Athletic Association |
| Short Conf: | SIAA |
| Record: | 5–3 |
| Conf Record: | 3–2 |
| Head Coach: | Mike Donahue |
| Hc Year: | 17th |
| Def Scheme: | 7–2–2 |
| Captain: | Noah Caton |
| Stadium: | Drake Field Rickwood Field |
The 1921 Auburn Tigers football team represented Auburn University in the 1921 college football season. It was the Tigers' 30th season and they competed as a member of the Southern Intercollegiate Athletic Association (SIAA). The team was led by head coach Mike Donahue, in his 17th year, and played their home games at Drake Field in Auburn, Alabama. They finished with a record of five wins and three losses (5–3 overall, 3–2 in the SIAA).