| Competition: | Liga |
| Season: | 1931 |
| Winners: | Garbarnia Kraków (1st title) |
| Relegated: | Lechia Lwów |
| League Topscorer: | Walerian Kisieliński (24 goals) |
| Total Goals: | 511 |
| Prevseason: | 1930 |
| Nextseason: | 1932 |
Statistics of Ekstraklasa for the 1931 season.
It was contested by 12 teams, and Garbarnia Kraków won the championship.