Montenegrin Orthodox Church in the context of Antonije Abramović

Church Slavonic is the conservative Slavic liturgical language used by the Eastern Orthodox Church in Belarus, Bulgaria, North Macedonia, Montenegro, Poland, Russia, Ukraine, Serbia, the Czech Republic and Slovakia, Slovenia and Croatia. The language appears also in the services of the Russian Orthodox Church Outside of Russia, the American Carpatho-Russian Orthodox Diocese, and occasionally in the services of the Orthodox Church in America.

In addition, Church Slavonic is used by some churches which consider themselves Orthodox but are not in communion with the Orthodox Church, such as the Montenegrin Orthodox Church and the Russian True Orthodox Church. The Russian Old Believers and the Co-Believers also use Church Slavonic.

Eastern Orthodoxy in Montenegro refers to adherents, religious communities, institutions and organizations of Eastern Orthodox Christianity in Montenegro. It is the largest Christian denomination in the country. According to the latest 2023 Census of Montenegro, 443,394 citizens of Montenegro (71.10%) registered as Eastern Orthodox Christians. The majority of Eastern Orthodox people in Montenegro are adherents of the Serbian Orthodox Church. A minor percentage supports the canonically unrecognized Montenegrin Orthodox Church, which has the status of a religious non-governmental organization since its founding in 1993.

The current Metropolitan of Montenegro and primate of the Serbian Orthodox Church in Montenegro is Joanikije II, who serves as 56th head since the establishment of the diocese in 1219. The seat of the diocese is the Cetinje Monastery, since 1484.

Eastern Orthodoxy in Croatia refers to adherents, religious communities, institutions and organizations of Eastern Orthodox Christianity in Croatia. It is the second-largest religious denomination in Croatia, behind the Roman Catholic Church. Over 128 000 people, forming 3.32% of the total Croatian population, are Eastern Orthodox Christians (2021).

Eastern Orthodoxy in Croatia is represented foremost by the Serbian Orthodox Church, which claims most of the Eastern Orthodox Christian faithful. Other major jurisdictions are the Bulgarian Orthodox and Macedonian Orthodox Churches. These three churches are recognized by the state. In Croatia there are also adherents to the Montenegrin Orthodox Church. In the past, there was a Croatian Orthodox Church, although it was unrecognized by the Serbian Orthodox Church.

Mihailo Dedeić (Montenegrin Cyrillic: Михаило Дедеић; born 8 November 1938) commonly referred to by his birth name Miraš Dedeić (Montenegrin Cyrillic: Мираш Дедеић), was the second head of the non-canonical Montenegrin Orthodox Church.