Agha Bozorg Mosque (Persian: مسجد آقا بزرگ Masjed-e Āghā Bozorg) is a historical mosque in Kashan, Iran.

The mosque was built in the late 18th century by master-mi'mar Ustad Haj Sa'ban-ali.

The mosque and theological school (madrasah) is located in the center of the city.

The mosque has been described as "the finest Islamic complex in Kashan and one of the best of the mid-19th century".

This article about a mosque or other Islamic place of worship in Iran is a stub.