| Year: | 1921 |
| Team: | Northwestern Purple |
| Sport: | football |
| Conference: | Big Ten Conference |
| Short Conf: | Big Ten |
| Record: | 1–6 |
| Conf Record: | 0–5 |
| Head Coach: | Elmer McDevitt |
| Hc Year: | 2nd |
| Captain: | Jack Hathaway |
| Stadium: | Northwestern Field |
The 1921 Purple Wildcats team represented Northwestern University during the 1921 Big Ten Conference football season. In their second year under head coach Elmer McDevitt, the Purple compiled a 1–6 record (0–5 against Big Ten Conference opponents) and finished in last place in the Big Ten Conference.[1] [2]