The Sinjar Mountains, are a 100-kilometre-long (62 mi) mountain range that runs east to west, rising above the surrounding alluvial steppe plains in northwestern Iraq to an elevation of 1,463 meters (4,800 ft). The highest segment of these mountains, about 75 km (47 mi) long, lies in the Nineveh Governorate. The western and lower segment of these mountains lies in Syria and is about 25 km (16 mi) long. The city of Sinjar is just south of the range. These mountains are regarded as sacred by the Yazidis.

Sinjar is a town in the Sinjar District of the Nineveh Governorate in northern Iraq. It is located about five kilometers south of the Sinjar Mountains. Its population in 2013 was estimated at 88,023, and is predominantly Yazidi.