Al-Qusayr ( ; ) is a city in western Syria, administratively part of the Homs Governorate. It is located about south of Homs and is situated in a mountainous area overlooking Syria's border with Lebanon which lies 15 kilometers to the southwest. Nearby localities include Rablah and Zira'a to the south, Jandar further to the east, al-Dabaah to the northeast, Arjoun to the northwest and Aqrabiyah to the west. Al-Qusayr has an altitude of .