The Eastern Orthodox Church, officially the Orthodox Catholic Church, and also called the Greek Orthodox Church or simply the Orthodox Church, is the second-largest Christian church, with approximately 230 million baptised members. It operates as a communion of autocephalous churches, each governed by its bishops via local synods. The church has no central doctrinal or governmental authority analogous to the pope of the Roman Catholic Church. Nevertheless, the Ecumenical Patriarch of Constantinople is recognised by them as primus inter pares, a title formerly given to the patriarch of Rome. As one of the oldest surviving religious institutions in the world, the Eastern Orthodox Church has played an especially prominent role in the history and culture of Eastern and Southeastern Europe.
The Eastern Orthodox Church, officially the Orthodox Catholic Church and commonly known simply as the Orthodox Church is a communion composed of up to seventeen separate autocephalous (self-governing) hierarchical churches that profess Eastern Orthodoxy and recognise each other as canonical (regular) Eastern Orthodox Christian churches.
In Christian denominations, an archbishop is a bishop of higher rank or office. In most cases, such as the Catholic Church, there are many archbishops who either have jurisdiction over an ecclesiastical province in addition to their own archdiocese, or are otherwise granted a titular archbishopric. In others, such as the Lutheran Church of Sweden, the title is only borne by the leader of the denomination.
The Ecumenical Patriarchate of Constantinople is one of the fifteen to seventeen autocephalous churches that together compose the Eastern Orthodox Church. It is headed by the Ecumenical Patriarch of Constantinople.
An exarch was the holder of any of various historical offices, some of them being political or military and others being ecclesiastical.
The Greek Orthodox Patriarchate of Antioch, also known as the Antiochian Orthodox Church and legally as the RūmOrthodox Patriarchate of Antioch and All the East, is an autocephalous Greek Orthodox church within the wider communion of Eastern Orthodox Christianity that originates from the historical Church of Antioch. Headed by the Greek Orthodox patriarch of Antioch, it considers itself the successor to the Christian community founded in Antioch by the Apostles Peter and Paul. It is one of the largest Christian denominations of the Middle East, alongside the Copts of Egypt and the Maronites of Lebanon.
An ecclesiastical province is one of the basic forms of jurisdiction in Christian churches, including those of both Western Christianity and Eastern Christianity, that have traditional hierarchical structures. An ecclesiastical province consists of several dioceses, one of them being the archdiocese, headed by a metropolitan bishop or archbishop who has ecclesiastical jurisdiction over all other bishops of the province.
The Church of Greece, part of the wider Greek Orthodox Church, is one of the autocephalous churches which make up the communion of Eastern Orthodox Christianity. Its canonical territory is confined to the borders of Greece prior to the Balkan Wars of 1912–1913, with the rest of Greece being subject to the jurisdiction of the Ecumenical Patriarchate of Constantinople. However, most of the dioceses of the Metropolises of the New Lands are de facto administered as part of the Church of Greece for practical reasons, under an agreement between the churches of Athens and Constantinople. The primate of the Church of Greece is the archbishop of Athens and All Greece.
The Archdiocese of America, better known as the Greek Orthodox Archdiocese of America, is a jurisdiction of the Eastern Orthodox Church under the Ecumenical Patriarchate of Constantinople. It was formally constituted in 1922 and has had seven Archbishops. The Archdiocese currently covers the United States and one parish in the Bahamas, and is mostly Greek-American in composition and culture.
The Ukrainian Orthodox Church of Canada is an Eastern Orthodox church in Canada, primarily consisting of Orthodox Ukrainian Canadians. Its former name was the Ukrainian Greek Orthodox Church of Canada (UGOCC). The Church, currently a metropolis of the Ecumenical Patriarchate of Constantinople, is part of the wider Eastern Orthodox communion, however was created independently in 1918.
The Bulgarian Orthodox Church, legally the Patriarchate of Bulgaria, is an autocephalous Eastern Orthodox jurisdiction based in Bulgaria. It is the first medieval recognised patriarchate outside the Pentarchy and the oldest Slavic Orthodox church, with some 6 million members in Bulgaria and between 1.5 and 2 million members in a number of other European countries, Asia, the Americas, Australia, and New Zealand. It was recognized as autocephalous in 1945 by the Ecumenical Patriarchate of Constantinople.
The Macedonian Orthodox Church – Archdiocese of Ohrid, or simply the Macedonian Orthodox Church (MOC) or the Archdiocese of Ohrid (AO), is an autocephalous Eastern Orthodox church in North Macedonia. The Macedonian Orthodox Church claims ecclesiastical jurisdiction over North Macedonia, and is also represented in the Macedonian diaspora. The primate of the Macedonian Orthodox Church is Stefan Veljanovski, the Metropolitan of Skopje and Archbishop of Ohrid and Macedonia.
The Estonian Apostolic Orthodox Church is an Orthodox church in Estonia under the direct jurisdiction of the Ecumenical Patriarch of Constantinople. Under Estonian law, it is the legal successor to the pre–World War II Estonian Orthodox Church, which in 1940 had over 210,000 faithful, three bishops, 156 parishes, 131 priests, 19 deacons, two monasteries, and a theological seminary; the majority of the faithful were ethnic Estonians.
The Catholic Church in Greece is part of the worldwide Catholic Church, under the spiritual leadership of the Pope in Rome. Indigenous Roman Catholic Greeks numbered about 50,000-70,000 in 2022 and were a religious and not an ethnic minority. Most of them are a remnant of Venetian and Genoese rule in southern Greece and many Greek islands from the early 13th until the late 18th century, Greeks who converted to Catholicism or descendants of the thousands of Bavarians that came to Greece in the 1830s as soldiers and civil administrators, accompanying King Otto. One very old but still common term to reference to them is Φράγκοι, or "Franks", dating to the times of the Byzantine Empire, when medieval Greeks would use that term to describe all Catholics.
The Major Archeparchy of Kyiv–Galicia (Kyiv–Halych) is a Ukrainian Greek Catholic Major Archeparchy of the Catholic Church, that is located in Ukraine. It was erected on 21 August 2005 with the approval of Pope Benedict XVI. There are other territories of the Church that are not located in Ukraine. The cathedral church — the Cathedral of the Resurrection of Christ — is situated in the city of Kyiv. The metropolitan bishop is — ex officio — the Primate of the Ukrainian Greek Catholic Church. The incumbent major archbishop is Sviatoslav Shevchuk.
The Pan-Orthodox Council, officially referred to as the Holy and Great Council of the Orthodox Church, was a synod of set representative bishops of the universally recognised autocephalous local churches of the Eastern Orthodox Church held in Kolymvari, Crete. The Council sat from 19 to 26 June 2016.
