Taisha (大社町, Taisha-machi) is a town located in Hikawa District, Shimane Prefecture, Japan. As of 2003, the town had an estimated population of 15,733 and a density of 376.39 persons per km2. The total area was 41.80 km2. On March 22, 2005, Taisha, along with the city of Hirata, the towns of Koryō, Sada and Taki (all from Hikawa District), was merged into the expanded city of Izumo. Taisha was formerly connected to Izumo by a JR West line, however the station and line from Izumo to Taisha was closed in 1990. Taisha old JR station remains as a historic building and museum.