| 1931 International League season | |
|---|---|
| League | International League |
| Sport | Baseball |
| Duration | April 15 – September 20 |
| Number of games | 168 |
| Number of teams | 8 |
| International League Pennant | |
| League champions | Rochester Red Wings |
| Runners-up | Newark Bears |
The 1931 International League was a Class AA baseball season played between April 15 and September 20. Eight teams played a 168-game schedule, with the first place team winning the pennant.
The Rochester Red Wings won the International League pennant, finishing in first place, two games ahead of the second place Newark Bears.