Nine Dome Mosque, Medieval mosque in Bagerhat District, Bangladesh

The Nine Dome Mosque is a medieval religious building in Bagerhat with thick walls, three arched openings on each side, and nine separate square sections covered by large domes. The interior is divided by stone pillars with stepped square bases, each supporting an individual inverted cup-shaped dome.

Khan Jahan Ali built this structure in the 15th century during the Bengal Sultanate period as part of the larger Mosque City of Bagerhat. It stands as one of the most important remains from that era in the region.

The mosque stands on the west bank of the Thakur Dighi tank, also called Khanjeli Dighi, near Khan Jahan Ali's tomb. Its name comes from the nine domes set in three rows of three above the roof. Brickwork patterns and terracotta carvings cover the interior and exterior walls, and three mihrabs are spaced along the west wall.

The mosque stands on the west bank of the Thakur Dighi tank in Bagerhat Sadar Upazila, next to Khan Jahan Ali's tomb and near the ruined Zinda Pir Mosque and mazar. Its western wall faces Mecca, with the mihrab set into that wall. The building was affected by sulphates and has since been substantially restored.

The nine domes are arranged through a deliberate system of stone pillars that allows each section to function as an independent space beneath its own dome. This engineering approach created one large prayer hall while maintaining structural stability across the entire building.