Arifil Mosque, Historical mosque in Sarail Upazila, Bangladesh.

Arifil Mosque is a structure featuring three large domes, four corner towers, and five entrances distributed across its rectangular form. The 24-meter length accommodates multiple prayer halls with symmetrical architectural planning.

Shah Arif built this mosque in 1662 during the Mughal period, when the region was under Sylhet Sarkar administration. The structure reflects the religious importance and administrative power of the area at that time.

The mosque blends Bengali and Persian design features visible in its prayer spaces. The intricately carved niches and arched alcoves throughout reflect the craftsmanship of its builders.

The mosque lies 0.5 km northwest of the Sarail Upazila centre and about 15 km from Brahmanbaria town, beside Sagardighi pond. It is entered through a modern gate on the east side of the front courtyard. The Department of Archaeology manages the site, which was repaired in 2009–2010.

The mosque's interior was polished so smoothly on the floor, walls, mihrabs and domes that a speaker's voice carries equally to every corner, an old echo system built into the prayer hall. Beside the building stands the Arifail mazar, known as Jorakobor, and the pond to its north is called Sagardighi.