| Competition: | Nemzeti Bajnokság I |
| Season: | 1920–21 |
| Winners: | MTK Budapest FC |
| Matches: | 156 |
| Total Goals: | 385 |
| Prevseason: | 1919–20 |
| Nextseason: | 1921–22 |
Statistics of Nemzeti Bajnokság I for the 1920–21 season.
It was contested by 13 teams, and MTK Hungária FC won the championship.