| Competition: | Primera División |
| Season: | 1921 |
| Dates: | 3 April 1921 – 8 January 1922 |
| Winners: | Huracán (AFA) Racing (AAmF) |
| Prevseason: | 1920 |
| Nextseason: | 1922 |
The 1921 Argentine Primera División was the 30th season of top-flight football in Argentina. Huracán won its first AFA league title while Racing won the dissident Asociación Amateur championship.[1]
| Competition: | Primera División (AFA) |
| Season: | 1921 |
| Dates: | 3 April 1921 – 8 January 1922 |
| Winners: | Huracán (1st title) |
| Promoted: | El Porvenir Platense (Retiro) |
| League Topscorer: |  Guillermo Dannaher (23 goals) |
| Prevseason: | 1920 |
| Nextseason: | 1922 |
Banfield disaffiliated from the association moving to the rival Asociación Amateurs de Football with a few fixtures disputed.[2]
| Competition: | Primera División (AAmF) |
| Season: | 1921 |
| Dates: | 3 April 1921 – 8 January 1922 |
| Winners: | Racing (8th title) |
| Relegated: | (none) |
| League Topscorer: | Alberico Zabaleta (32 goals) |
| Prevseason: | 1920 |
| Nextseason: | 1922 |
Racing Club won its 8th title. General Mitre, which had debuted at Primera after promoting last year, was expelled from the association after playing 17 fixtures and all its matches annulled.