Christianity in Lebanon has a long and continuous history. Biblical Scriptures show that Peter and Paul evangelized the Phoenicians, whom they affiliated to the ancient Patriarchate of Antioch. Christianity spread slowly in Lebanon due to pagans who resisted conversion, but it ultimately spread throughout the country. Even after centuries of Muslim rule, it remains the dominant faith of the Mount Lebanon region and has substantial communities elsewhere.

Islam in Lebanon has a long and continuous history. According to an estimate by the CIA, it is followed by 63% of the country's total population. Sunnis make up 31.9%, Twelver Shia make up 31.2%, next to smaller percentages of other Shia branches, such as Alawites and Ismailis. The Druze community is designated as one of the five Lebanese Muslim communities, even though most Druze do not identify as Muslims, and they do not accept the five pillars of Islam.