Id Kah Mosque, Islamic mosque in Kashgar, China

Id Kah Mosque is a mosque in Kashgar covering about 16,800 square metres, oriented west with a yellow-brick gate tower 17 metres high, 4.7 metres wide and 4.3 metres wide, flanked by two asymmetric 18-metre minarets with crescent finials. Behind the gate lies a large courtyard with 36 teaching rooms along its north and south walls, and a raised prayer hall whose inner and outer halls are carried on 158 pale-blue columns.

The mosque was built in 1442 by Saqsiz Mirza, elder son of Amir Sayyid Ali, to commemorate his ancestors, on the site of older structures from 996. The present golden-brick building dates from 1798, replacing the earlier one, and was enlarged to its current size in 1838; the facade was tiled in 2004–2005.

The name derives from Persian Eidgāh, "place of festivities"; Uyghurs call it Hëytgah Meschiti. The prayer hall's ceiling is carried by 158 pale blue columns in a grid, their corners and the coffered ceiling carved and painted. A niche in the main hall's central wall holds a sedan-style throne.

The mosque stands in the Ustang Boyi street area of Kashgar, entered through the yellow-brick gate tower facing east. As of 2026 visitors may enter for two hours each morning and two hours each afternoon; worship is largely limited to elderly adherents on select holy days. Dress modestly and keep to the courtyard and gate area.

The gate tower rises about 17 metres, and its two minarets stand 18 metres high but were built asymmetrically, so they do not mirror each other. The gate itself is 4.7 metres high and 4.3 metres wide, set in yellow brick with plaster-filled joints.