Yahchouch (Arabic: يحشوش) is a municipality in the Keserwan District of the Keserwan-Jbeil Governorate in Lebanon. It is located 42 kilometers north of Beirut. Its average elevation is 670 meters above sea level and its total land area is 636 hectares. Yahchouch's inhabitants are predominantly Maronite Catholics and Christians from other denominations. Yahchouch is home to the Jabal Moussa reserve.