| Competition: | Primera División |
| Season: | 1951 |
| Winners: | Racing (12th title) |
| League Topscorer: |  Santiago Vernazza (22 goals) |
| Prevseason: | 1950 |
| Nextseason: | 1952 |
The 1951 Argentine Primera División was the 60th season of top-flight football in Argentina. The season began on April 15 and ended on December 5.[1] Lanús promoted to Primera División as champion of Primera B[2]
Banfield and Racing shared the 1st position at the end of the tournament so a two-game playoff match was held to decide a champion. Racing won the series winning their 12th league title (and third consecutive).[3]
On the other hand, Quilmes and Gimnasia y Esgrima (LP) were relegated.
After finishing 1st in the table (with no goal difference considered), both teams, Banfield and Racing had to play a two-legged series to decide a champion.[3]
| width=25 | ! | width=25 | ||
|---|---|---|---|---|
| GK | 1 | Héctor Grisetti | ||
| DF | Higinio García | |||
| DF | José M. Pérez | |||
| MF | Juán Gimenez | |||
| MF | Alberto Rastelli | |||
| MF | Jorge Gutiérrez | |||
| FW | ||||
| FW | Norberto Cupo | |||
| FW | Manuel Blanco | |||
| FW | Llamil Simes | |||
| FW | 11 | |||
| Manager: | ||||
| Guillermo Stábile | ||||
| width=25 | ! | width=25 | ||
|---|---|---|---|---|
| GK | Manuel Graneros | |||
| DF | Osvaldo Ferretti | |||
| DF | Luis Angel Bagnato | |||
| MF | Domingo Capparelli | |||
| MF | ||||
| MF | Héctor D'Angelo | |||
| FW | Miguel Ángel Converti | |||
| FW | José M. Sánchez Lage | |||
| FW | Gustavo Albella | |||
| FW | Nicolás Moreno | |||
| FW | Juan C. Huarte | |||
| Manager: | ||||
| José I. Martínez & Félix Zurdo | ||||
| width=25 | ! | width=25 | ||
|---|---|---|---|---|
| GK | Manuel Graneros | |||
| DF | Osvaldo Ferretti | |||
| DF | Luis Angel Bagnato | |||
| MF | Domingo Capparelli | |||
| MF | ||||
| MF | Héctor D'Angelo | |||
| FW | Miguel Ángel Converti | |||
| FW | José M. Sánchez Lage | |||
| FW | Gustavo Albella | |||
| FW | Nicolás Moreno | |||
| FW | Raúl Tolosa | |||
| Manager: | ||||
| José I. Martínez & Félix Zurdo | ||||
| width=25 | ! | width=25 | ||
|---|---|---|---|---|
| GK | Héctor Grisetti | |||
| DF | Higinio García | |||
| DF | José M. Pérez | |||
| MF | Juán Gimenez | |||
| MF | Alberto Rastelli | |||
| MF | Jorge Gutiérrez | |||
| FW | ||||
| FW | Manuel Ameal | |||
| FW | Rubén Bravo | |||
| FW | Llamil Simes | |||
| FW | ||||
| Manager: | ||||
| Guillermo Stábile | ||||