The Imamzadeh Ismail and Shayah Mosque is a Twelver Shi'ite imamzadeh, mausoleum, and mosque complex, located in Esfahan, in the province of Isfahan, Iran, which dates from both the Seljuk and Safavid periods. The complex was added to the Iran National Heritage List on 6 January 1932, administered by the Cultural Heritage, Handicrafts and Tourism Organization of Iran.