Greek Orthodox Church in the context of "Eastern Orthodoxy"

Greece, officially the Hellenic Republic, is a country in Southeast Europe. Located on the southern tip of the Balkan peninsula, it shares land borders with Albania to the northwest, North Macedonia and Bulgaria to the north, and Turkey to the east. The Aegean Sea lies to the east of the mainland, the Ionian Sea to the west, and the Sea of Crete and the Mediterranean Sea to the south. Greece has the longest coastline on the Mediterranean basin, spanning thousands of islands and nine traditional geographic regions. It has a population of over 10 million. Athens is the nation's capital and largest city, followed by Thessaloniki, Patras and Heraclion.

Greece is considered the cradle of Western civilisation and the birthplace of democracy, Western philosophy, Western literature, historiography, political science, major scientific and mathematical principles, theatre, and the Olympic Games. The Ancient Greeks were organised into independent city-states, or poleis (singular polis), that spanned the Mediterranean and Black seas. Philip II of Macedon united most of present-day Greece in the fourth century BC, with his son Alexander the Great conquering much of the known ancient world from the Near East to northwestern India. The subsequent Hellenistic period saw the height of Greek culture and influence in antiquity. Greece was annexed by Rome in the second century BC and became an integral part of the Roman Empire and its continuation, the Byzantine Empire, where Greek culture and language were dominant. The Greek Orthodox Church, which emerged in the first century AD, helped shape modern Greek identity and transmitted Greek traditions to the wider Orthodox world.

Greek Cypriots (Greek: Ελληνοκύπριοι, romanized: Ellinokýprioi) are the ethnic Greek population of Cyprus, forming the island's largest ethnolinguistic community. According to the 2023 census, 719,252 respondents recorded their ethnicity as Greek, forming almost 99% of the 737,196 Cypriot citizens and over 77.9% of the 923,381 total residents of the area controlled by the Republic of Cyprus. These figures do not include the 29,321 citizens of Greece residing in Cyprus, ethnic Greeks recorded as citizens of other countries, or the population of illegally occupied Northern Cyprus.

The majority of Greek Cypriots are members of the Church of Cyprus, an autocephalous Greek Orthodox Church within the wider communion of Orthodox Christianity. In regard to the 1960 Constitution of Cyprus, the term also includes Maronites, Armenians, and Catholics of the Latin Church ("Latins"), who were given the option of being included in either the Greek or Turkish communities and voted to join the former due to a shared religion.

The Church of Greece (Greek: Ἐκκλησία τῆς Ἑλλάδος, romanized: Ekklēsía tē̂s Helládos, IPA: [ekliˈsi.a tis eˈlaðos]), 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 ("Old Greece"), with the rest of Greece (the "New Lands", Crete, and the Dodecanese) 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.

Christianity in Cyprus is the largest religion in the country, making up 78% of the island's population. The largest Christian denomination is the Greek Orthodox Church, while the rest are smaller communities of Anglicans, Roman Catholics, Latin Christians, Maronites, Armenian Apostolics, and Greek Evangelicals.

Christianity in Turkey has a long history, dating back to the early origins of Christianity in Asia Minor and the Middle East during the 1st century AD. In modern times the percentage of Christians in Turkey has declined from 20 to 25% in 1914, to about 2% in 1927, to 0.2–0.4% today. Sources estimate that the Christian population in Turkey ranges between 203,500 and more than 370,000. However, the exact number remains unclear due to the absence of a religious census in the country. The percentage of Christians in Turkey fell mainly as a result of the late Ottoman genocides: the Armenian genocide, Greek genocide, and Assyrian genocide, the population exchange between Greece and Turkey, the emigration of Christians that began in the late 19th century and gained pace in the first quarter of the 20th century, and due to events such as the 1942 Varlık Vergisi tax levied on non-Muslim citizens in Turkey and the 1955 Istanbul pogrom against Greek and Armenian Christians. Exact numbers are difficult to estimate, as many Turkish former Muslim converts to Christianity often hide their Christian faith for fear of familial pressure, religious discrimination, and persecution.

This was due to events which had a significant impact on the country's demographic structure, such as the First World War, the anti-Christian genocides of Greeks, Armenians, and Assyrians perpetrated by Turkish Muslims, and the population exchange between Greece and Turkey, and the emigration of persecuted Christians (such as Assyrians, Greeks, Armenians, etc.) to foreign countries (mostly in Europe and the Americas) that began in the late 19th century and gained pace in the first quarter of the 20th century, especially during World War I. Signed after the First World War, the Treaty of Lausanne explicitly guarantees the security and protection of both Greek and Armenian Orthodox Christian minorities. Their religious institutions are recognized officially by the Republic of Turkey.

The Convention Concerning the Exchange of Greek and Turkish Populations (Greek: Σύμβαση για την Ανταλλαγή των ελληνικών και τουρκικών Πληθυσμών, romanized: Symvasi gia eis Antallagi ton ellinikon kai tourkikon Plithysmon, Turkish: Türk ve Yunan Nüfuslarının Mübadelesine İlişkin Sözleşme), also known as the Lausanne Convention, was an agreement between the Greek and Turkish governments signed by their representatives in Lausanne on 30 January 1923, in the aftermath of the Greco-Turkish War of 1919–1922. The agreement provided for the simultaneous expulsion of Orthodox Christians from Turkey to Greece and of Muslims from Greece (particularly from the north of the country) to Turkey. These involuntary population transfers involved approximately two million people, around 1.5 million Anatolian Greeks and 500,000 Muslims in Greece.

Filoti (in Greek: Φιλώτι or Φιλότι; officially: Φιλότιον) is a semi-mountainous village of central Naxos, Greece, with a population of 1,617 residents (census 2021), located at the foot of Mt. Zas (1,004 m), at an altitude of 400 meters, about 18.2 kilometres (11.3 mi) from the city of Naxos. It is located on the slopes of two hills and consists of three settlements, Rachidi, Klefaros and Lioiri. Its stand out is the Orthodox church of Panagia Filotitissa that is dedicated to the Assumption of the Virgin, a basilica built in 1718 in the place of an old Byzantine church. The economy of the village is mainly based on livestock products, secondarily in agriculture and tourism. It has a Primary School (since 1838), a Professional High School, a Multipurpose Regional Doctor, a Citizen Service Center (KEP), a Post office, a dentist and a pharmacy.

Together with Kalandos (pop. 10), constitutes the Municipal Community of Filoti (pop. 1487), which belongs to the municipal unit of Drymalia, of the municipality of Naxos and Lesser Cyclades, of the regional unit of Naxos (of the former county of Cyclades), in the administrative region South Aegean, Greece.

Mytilene (/ˌmɪtɪˈliːni/; Greek: Μυτιλήνη, romanized: Mytilíni [mitiˈlini] ) is the capital of the Greek island of Lesbos, and its port. It is also the capital and administrative center of the North Aegean Region, and hosts the headquarters of the University of the Aegean. It was founded in the 11th century BC.

Mytilene is one of the two municipalities on the island of Lesbos, created in 2019; the other is West Lesbos. Mytilene is built on the southeast edge of the island. It is the seat of a metropolitan bishop of the Greek Orthodox Church.

Ayvalık Islands (Turkish: Ayvalık Adaları, Latin: Hecatonnesi, Ancient Greek: Ἑκατόννησοι, romanized: Hekatonesoi), are the group of islands around Ayvalık district of Turkey in Balıkesir Province in the Northeastern Aegean Sea. There are 22 islands and numerous rocks in the group, with Cunda Island, now a peninsula, being the largest. People live only on Cunda and Lale Islands. Cunda and Lale islands are linked to Ayvalık on the mainland, by a causeway enabling transportation by car. Cunda also has a ferry link from the main town, Alibey, to Ayvalık during the summer.

A Greek Orthodox metropolis was established, based in Cunda island, for some months in 1922.