The 1953 Formula One season was the seventh season of the FIA's Formula One racing. As in 1952, all races counting towards the World Championship of Drivers, apart from the Indianapolis 500, were held for cars complying with Formula Two regulations rather than with Formula One, with the Indianapolis 500 held to AAA regulations.

1953 season commenced on 18 January and ended on 13 September after nine races, was won by Alberto Ascari, driving for Scuderia Ferrari. Ascari became the first driver to successfully defend his title.

Ferrari drivers again dominated the championship, taking seven of the eight Grands Prix. However, Juan Manuel Fangio's challenge in his more fragile Maserati took him to second place in the championship and a win at Monza. Ascari extended his unbeaten run to nine consecutive World Championship Grand Prix wins before his teammate Mike Hawthorn broke the sequence in becoming the first-ever British winner in the French Grand Prix at Reims after a thrilling battle with Fangio.

The 1953 championship was the first genuinely global World Championship of Drivers, with a championship event staged outside of Europe or the United States for the first time. That race, the 1953 Argentine Grand Prix, was marred by an accident involving the Ferrari of Giuseppe Farina, which crashed into an unprotected crowd, killing nine spectators.