Nagoya Castle (名護屋城, Nagoya-jō) was a Japanese castle located in Karatsu, Saga Prefecture. Nagoya Castle was located within Hizen Province on a peninsula near to Iki Island, and served as the base from which Toyotomi Hideyoshi launched his invasions of Korea from 1592 to 1598. None of the original historic structures of Nagoya Castle remain, but the castle's ruined foundations survive in the formerly separate town of Chinzei, now part of the city of Karatsu.