Grands Prix during World War II
Grand Prix motor racing in Europe was affected by the outbreak of World War II in late 1939, leaving the 1939 Grand Prix season without an official champion. Italy remained neutral until June 1940 and staged two GPs in May 1940, as well as the 1940 Mille Miglia sports car race.
The USA held several races until September 1941. After that only a few events in South America took place, the latest in July 1942. There was no organised championship in these years. The majority of Grand Prix races during this period were run in the Americas.
The first post-war races were run in Paris on 9 September 1945, one week after the end of the war in the Pacific. They were not regular international Grand Prix, but mainly French, commemorating war-related events or persons, like the 1945 Coupe des Prisonniers.
Wartime Grands Prix
1940–1942
| Date | Name | Circuit | Winning drivers | Winning constructor | Report | ||||
| 1 January 1940 |  1943–1944''No Grand Prix races held''1945
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