The 1973 season was the 27th season of Grand Prix motor racing. It featured the 1973 World Championship of Drivers and the 1973 International Cup for Grand Prix Manufacturers, which were contested concurrently over a fifteen-race series that commenced on 28 January and ended on 7 October. There were two new races for the 1973 season – the Brazilian Grand Prix at Interlagos in Sao Paulo and the Swedish Grand Prix at Anderstorp. The season also included two non-championship races which were open to both Formula One and Formula 5000 cars.

The 1973 season saw the intervention of a Safety Car in Formula One for the first time at the Canadian Grand Prix. However, this safety concept would not be officially introduced until twenty years later, in 1993. As well as Cevert, Briton Roger Williamson was also killed during the season, in a crash at the Dutch Grand Prix at Zandvoort.

Another change to the rules introduced this season was the cars doing a full warm-up lap before the race. Prior to this, tracks included a dummy grid a short distance behind a grid proper, and the cars would simply move from one to the other to begin the race.