Eastern Orthodox Christianity is the largest religion in Montenegro at 71% of the population, and is the religion of choice for the vast majority of ethnic Montenegrins and Serbs. In addition to Eastern Orthodox Christianity, there is also a sizeable number of adherents to Sunni Islam at 20% of the population, mainly from ethnic Bosniaks and Albanians.
The majority of Eastern Orthodox Christians in the country belong to the canonically recognized Serbian Orthodox Church, but a small minority adhere to the Montenegrin Orthodox Church, which is not canonically recognized by the Eastern Orthodox Church. According to a 2020 poll conducted by CEDEM, approximately 10% of Montenegro's Eastern Orthodox Christians have opted for the Montenegrin Orthodox Church, while approximately 90% have opted for or stayed with the Serbian Orthodox Church.[2]