| Year: | 1921 |
| Team: | Princeton Tigers |
| Sport: | football |
| Conference: | Independent |
| Record: | 4–3 |
| Head Coach: | Bill Roper |
| Hc Year: | 8th |
| Off Scheme: | Short punt |
| Captain: | Stan Keck |
| Stadium: | Palmer Stadium |
| Uniform: | 20sprincetonuniform2.png |
The 1921 Princeton Tigers football team represented Princeton University in the 1921 college football season. The team finished with a 4–3 record under eighth-year head coach Bill Roper.[1] Princeton guard Stan Keck was a consensus first-team honoree on the 1921 College Football All-America Team, and two other players (center Al Wittmer and an end with the surname Sniveley) were selected as first-team All-Americans by at least one selector.