1940 Summer Olympics Cancelled

The 1940 Summer Olympics, officially known as the Games of the XII Olympiad, was a planned international multi-sport event scheduled to have been held from 21 September to 6 October 1940, in Tokyo City, Japan, and later rescheduled for 20 July to 4 August 1940, in Helsinki, Finland following the outbreak of the Second Sino-Japanese War in 1937.^¹ They were ultimately cancelled because of World War II alongside the 1940 Winter Olympics in Sapporo, Japan, and were the third games to be cancelled due to war.^¹