The Hosseinieh Azam Zanjan Mosque of is a Shi'ite mosque and hosseinieh complex, located in the city of Zanjan, in the province of Zanjan, Iran. The mosque and hosseinieh complex was completed in 1878 CE, during the Qajar era. The hosseinieh by contains the tombs of Mirza Muhammad Taqi and Haj Mirza Babai; with the eighth day of Muharram being a nominated day of mourning.