Shushtar is a city in and the capital of Shushtar CountyKhuzestan ProvinceIran. At the 2012 census, its population was 192,361.

Shushtar is an ancient fortress city, approximately 92 kilometres (57 mi) away from Ahvaz, the centre of the province. Much of its past agricultural productivity derives from the Roman-built irrigation system which centered on the Band-e Kaisar, the first dam bridge in Iran. The Mayor of Shushtar is Ahmad Asefi.