Lebanese Greek Orthodox Christians (Arabic: المسيحية الأرثوذكسية الرومية في لبنان) refers to Lebanese people who are adherents of the Greek Orthodox Church of Antioch in Lebanon, which is an autocephalous Greek Orthodox Church within the wider communion of Eastern Orthodox Christianity, and is the second-largest Christian denomination in Lebanon after the Maronite Christians.
Lebanese Greek Orthodox Christians are believed to constitute about 8% of the total population of Lebanon. Most of the Greek Orthodox Christians live either in the capital city of Beirut, the Metn hinterland, the Hasbayya and Rashayya districts in the southeast, and the North Governorate, in the Koura region (south of Tripoli) and Akkar.