The 2026 Asian Games, also known as 20th Asian Games and Aichi-Nagoya 2026, will be a multi-sport event celebrated around the Aichi Prefecture in Japan from 19 September to 4 October 2026. The prefecture capital Nagoya will be the epicenter of the events. Nagoya will be the third Japanese city to host the Asian Games, after Tokyo in 1958 and Hiroshima in 1994. The event is set to return to its traditional 4-year cycle, after the 2022 Asian Games in Hangzhou, China were postponed to 2023 due to the COVID-19 pandemic.

Nagoya is the largest city in the Chūbu region, the fourth-most populous city proper with a population of 2.3 million in 2020, and the principal city of the Chūkyō metropolitan area, which is the third-most populous metropolitan area in Japan with a population of 10.11 million. Located on the Pacific coast in central Honshu, it is the capital and most populous city of Aichi Prefecture, with the Port of Nagoya being Japan's largest seaport.