The 1983 South African Grand Prix was a Formula One motor race held at Kyalami on 15 October 1983.

Piquet qualified second, behind Patrick Tambay (Ferrari) in pole position and ahead of Riccardo Patrese (Brabham), Arnoux and Prost in third, fourth and fifth.

Needing only to finish fourth or higher, Piquet slowed and was overtaken by Patrese, Niki Lauda (McLaren) and Andrea de Cesaris (Alfa Romeo).

Ferrari won the Constructors' Championship despite not finishing in the points in the last race for the second consecutive year.

John Watson, completing his last full Formula One season, was disqualified for overtaking other cars on the parade lap.