Religion in Montenegro
- Eastern Orthodoxy (71.1%)
- Catholicism (3.27%)
- Other Christian (0.57%)
- Islam (19.99%)
- Atheist/Agnosticism (2.69%)
- Undeclared (2.1%)
- Other religions (0.28%)
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.