Religion in Montenegro refers to adherents, communities, institutions and organizations of various religions in Montenegro. While Eastern Orthodox Christianity is the dominant religious denomination in Montenegro, there are also sizable numbers of adherents of both Catholic Christianity and Islam. The dominant Church is the Serbian Orthodox Church although traces of a forming Montenegrin Orthodox Church are present. According to the 2020 estimate by the Pew Research Center, 76.6% of the population is Christian, 20.3% are Muslims, and 3.1% are unaffiliated.