Aichi Prefectural Gymnasium is an all-purpose gymnasium in Nagoya, Japan, built in 1964. Located on the site of the secondary enclosure of Nagoya Castle, it is host to numerous concerts and events. The gymnasium has 4,375 fixed seats, and can accommodate an additional 3,032 on the floor for certain events, giving it a total maximum capacity of 7,407.
In 1966 it won the 7th annual Building Contractors Society Award.
Professional Sumo's July Grand Sumo Tournament is held here every year from the second until the fourth Sunday in July.