| Competition: | Primera División |
| Season: | 1919 |
| Dates: | 16 March 1919 – 20 January 1920 |
| Winners: | Boca Juniors (AFA) Racing (AAmF) |
| Prevseason: | 1918 |
| Nextseason: | 1920 |
The 1919 Argentine Primera División was the 28th season of top-flight football in Argentina. The official "Asociación Argentina de Football" (AFA) league championship was abandoned mid season by the majority of the clubs, which joined the new "Asociación Amateurs de Football" (AAmF) while six clubs remained with the official body.
In the AFA league, Boca Juniors was crowned champion with 14 fixtures to be played, while Racing won its 7th league title at AAmF.[1]
Club Eureka debuted in the AFA championship, while Vélez Sársfield played its first Primera División championship in the AAmF after being disaffiliated from the official body.[2]
Out of 19 teams that started to compete in the championship, only 6 remained at the end of the season, after the first part of the tournament was annulled and re-started. The 13 teams that had been disaffiliated or expelled joined dissident "Asociación Amateurs de Football".
| Competition: | Primera División (AFA) |
| Season: | 1919 |
| Dates: | 28 September 1919 – 20 January 1920 |
| Winners: | Boca Juniors (1st title) |
| Promoted: | Eureka |
| Relegated: | (none) |
| Continentalcup1: | 1919 Copa Aldao |
| Continentalcup1 Qualifiers: | Boca Juniors |
| League Topscorer: |  Alfredo Garasini Alfredo Martín (both of Boca Juniors, 6 goals each) |
| Biggest Home Win: | Boca Juniors 7–0 Huracán |
| Biggest Away Win: | San Lorenzo 2–6 Racing |
| Prevseason: | 1918 |
| Nextseason: | 1920 |
| Competition: | Primera División (AAm) |
| Season: | 1919 |
| Dates: | 28 September – 28 December 1920 |
| Winners: | Racing (7th title) |
| Relegated: | (none) |
| Matches: | 91 |
| Total Goals: | 279 |
| League Topscorer: | Alberto Marcovecchio (Racing) (16 goals) |
| Biggest Home Win: | Racing 10–2 Estudiantes (BA) |
| Biggest Away Win: | Estudiantes (BA) 0–5 Atlanta Atlanta 0–5 Racing |
| Prevseason: | 1918 |
| Nextseason: | 1920 |