Metropolis of Smyrna
The Metropolis of Smyrna (Greek: Μητρόπολη Σμύρνης) was an ecclesiastical territory (diocese) of the Ecumenical Patriarchate of Constantinople. The Christian community of Smyrna was one of the Seven Churches of Asia, mentioned by Apostle John in the Book of Revelation. It was initially an archbishopric, but was promoted to a metropolis during the 9th century. Although the local Christian element was reduced during the 14th and 15th centuries, it retained its ecclesiastical autonomy continuously until 1922.
Early Christianity and Byzantine era 
The precise year when Christianity spread in Smyrna is unknown. It was perhaps introduced by Apostle Paul or one of his companions. By the end of the 1st century the city already hosted a small Christian community, while its first head was one named Aristion. The Church of Smyrna was also one of the Seven Churches of Asia, mentioned at the New Testament, Book of Revelation, written by John the Apostle. In ca. 110 AD, Ignatius of Antioch wrote a number of epistles among them to the people of Smyrna and its bishop, Polycarp. The latter martyred during the middle of the 2nd century AD. Smyrna was also the place of martyrdom of Saint Pionius, during the reign of Decius.
Already from the early Christian years Smyrna was an autocephalous archbishopric as part of the wider Metropolis of Ephesus. During the 9th century the local archbishopric was promoted to a metropolis. At the time of its promotion, the diocese of Smyrna held the 39th position in the Notitiae Episcopatuum, while during the reign of Emperor Leo VI (886–912) it held the 44th position. The city was also the place of exile of the monk Theodore the Studite, who played a major role in the revivals both of Byzantine monasticism and of classical literary genres in Byzantium.
Ottoman era 
During the 14th century, the Turkish raids and eventual capture of the city caused the local Church to decline and its territory to shrink. As a result, at the end of that century only the bishoprics of Phocaea and Magnesia were under the jurisdiction of the metropolis. Moreover, there are no surviving records of a local metropolitan after 1389. In December 1402 Smyrna was razed by the army of Timur. However, it appears that the Christian community survived the devastation of the city.
After the Ottoman conquest of Smyrna, it appears that the local Christians enjoyed a special status, contrary to several adjacent metropolises that became inactive, while with the Fall of Constantinople (1453) to the Ottomans, a major reorganization occurred in the ecclesiastical administration following the incorporation of the Ecumenical Patriarchate into the social structures of the Ottoman Empire. Thus, although Christianity in Anatolia was in steady decline during that period, the diocese of Smyrna survived, even in a restricted area of jurisdiction and managed to retain its status as a metropolis of the Orthodox Church.
During the 17th and 18th centuries a significant number of local saints (new martyrs) are recorded in the city, where most of them rejected conversion to Islam and were tortured by the Muslim authorities. At that period the Christian community increased enormously, due to the general demographic boom of the region, as a result of the commercial development of Smyrna. The city became a center of the Greek Enlightenment culture, while several schools were erected, like the Evangelical School and the Philological Gymnasion. On the other hand the local leadership of the Church was suspicious of progressive ideas, especially in education and supported a more traditional educational system.
In 1907, the administrative model of the local Greek Orthodox community still retained the traditional communal authorities of the Church and the Council of Elders (Greek: Δημογεροντία), but power was in fact exercised by a new body, the Central Committee, which comprised not only Ottoman Greeks but also citizens of the independent Greek kingdom. Nevertheless, according to this model the metropolitan of Smyrna retained an essential role and represented both the Church and the Orthodox community of Smyrna in all their external affairs and supervised it together with the Council of Elders and the Central Committee. The significant role of the Church authorities became more evident in the activity of metropolitan Chrysostomos, especially in the promotion of Greek nationalism among the Smyrniote Greeks.
Orthodox Christianity in Smyrna ended as a result of the Greco-Turkish War of 1919–1922. In September 1922, during the events of the Great Fire of Smyrna, thousands of civilians lost their lives and the survivors found refuge to Greece. It is estimated that of a total of 459 priests and bishops of the metropolis of Smyrna, 347 of them were murdered by the Turkish army. Among them was also the metropolitan, Chrysostomos.
Religious monuments 
According to 17th century traveler accounts, the main Christian sites of interest in Smyrna, were the ministry of Apostle John, the tomb of Saint Polycarp, as well as the place of his martyrdom. However, the remains of the Roman stadium where he martyred were demolished by an Ottoman vizier, in 1675 and in modern times the site was built over. Today, the only surviving place in memory of Saint Polycarp is an underground cave were, according to the tradition, he was tortured.
Municipality of Izmir has started a study to re-construct Stadium on the skirts of Mount Pagos, house built on top of the area has been purchased and demolished for opening ground. Municipality also renew the Church Agia Voukla in Basmane district as Museum (2012)
Notable religious personalities 
Martyrs of the Roman era 
- Pothinus and Irenaeus of Lyons
New martyrs of the Ottoman era 
- Nicholas of Karaman
- Dioscurus of Smyrna
- Demus of Smyrna
- Alexander of Salonica
- Procopius the new martyr
- Agathangelus the new martyr
- Nektarius the new martyr
- Patriarch Gregory V of Constantinople, metropolitan bishop of Smyrna (1785-1797)
- Chrysostomos of Smyrna
- Ascough, 2005: 8
- Terezakis, 2006
- Kiminas, 2008: 94
- Ascough, 2005: 36
- Thomas John Philip, Constantinides Hero Angela, Giles Constable, ed. by John Thomas (2000). Byzantine monastic foundation documents : a complete translation of the surviving founders' "Typika" and testaments. Washington, DC: Dumbarton Oaks Research Libr. and Collection. ISBN 9780884022329.
- Johnson, 2005: 244
- Terezakis, Yorgos. "Diocese of Nicomedia (Ottoman Period)". Εγκυκλοπαίδεια Μείζονος Ελληνισμού, Μ. Ασία. Retrieved 13 November 2012.
- Johnson, 2005: 246
- Vryonis, Speros (2000). The great catastrophes: Asia Minor/Smyrna--September 1922; Constantinople--September 6&7, 1955 : a lecture. Order of Saint Andrew the Apostle. p. 5.
- Johnson, 2005: 245
- Ascough, Richard S. (2006). Religious Rivalries and the Struggle for Success in Sardis and Smyrna. Waterloo: Wilfrid Laurier University Press. ISBN 9780889209244.
- Jonsson, David J. (2005). The clash of ideologies : the making of the Christian and Islamic worlds. [Longwood, Fla.]: Xulon Press. ISBN 9781597810395.
- Kiminas, Demetrius (2009). The Ecumenical Patriarchate. Wildside Press LLC. ISBN 9781434458766.
- Terezakis, Yorgos. "Diocese of Smyrna". Εγκυκλοπαίδεια Μείζονος Ελληνισμού, Μ. Ασία. Retrieved 28 October 2012.