1966 Buenos Aires Grand Prix
The 1966 Buenos Aires Grand Prix was a Formula Three race held on January 23, 1966 at the Autódromo Municipal in Buenos Aires, Argentina. The race was the first race for the XV Temporada Argentina.
Three spectators were hospitalized during the qualifying trials after being hit by a car.
Second race
Results from the 1966 Buenos Aires Grand Prix held at Buenos Aires on January 23, 1966, in the Autódromo Oscar Alfredo Gálvez.The race was the first race for the XV Temporada Argentina.| Pos | Driver | Constructor | Laps | Time/Retired |
| 1 |  |