Sarmin is a town in northwestern Syria, administratively part of the Idlib Governorate, located 15 kilometers southeast of Idlib. It has an altitude of about 390 meters. Nearby localities include Binnish to the north, Talhiyah to the northeast, Afs to the east, Saraqib to the southeast, al-Nayrab to the south and Qminas to southwest. The Taftanaz Military Airbase is located 9 kilometers (5.6 mi) to the northeast.