| Competition: | Primera División |
| Season: | 1966 |
| Winners: | Racing Club (15th title) |
| Promoted: | Colón (SF) Quilmes |
| Relegated: | (none) |
| Continentalcup1: | 1967 Copa Libertadores |
| Continentalcup1 Qualifiers: | Racing Club River Plate |
| League Topscorer: |  Luis Artime (23 goals) |
| Prevseason: | 1965 |
| Nextseason: | 1967 |
The 1966 Argentine Primera División was the 75th season of top-flight football in Argentina. The season began on March 6 and ended on December 6.[1]
Racing Club won the championship (15th title) with no teams relegated.