The '''Blue Mosque''' ({{langx|hy|Կապույտ Մզկիթ}}; {{langx|fa|مسجد کبود}}) is an 18th-century AzerbaijaniPersian [[Shia Islam|Shia]] mosque in [[Yerevan]], [[Armenia]]. It was commissioned by [[Hoseyn Ali Khan]], the khan of the Iranian [[Erivan Khanate]]. It is one of the oldest extant structures in [[Kentron District|central Yerevan]] and the most significant structure from the city's [[Iranian Armenia (1502–1828)|Iranian period]]. It was the largest of the eight mosques of Yerevan in the 19th century and is the only active mosque in Armenia today.