| Vicar Apostolic (2021.09.14 – ...): |  Bishop Massimiliano Palinuro (51)Apostolic Administrator of Istanbul of the Greeks (Turkiye) Patriarchal Administrator of Istanbul of the Greek-Melkites (Turkiye) |
Cities  | Churches (21) |
| Adalar |  St. Pacificus  |
| Ankara | St. Theresa |
| Ankara | Virgin Mary |
| Bakırköy | St. Stephen |
| Beykoz | Matka Boska Częstochowska |
| Istanbul |  Saint-Esprit (Cathedral, Minor Basilica) Sent Esprit Katedrali Cathedral Basilica of the Holy Spirit |
| Istanbul |  Hagia Sophia Cathedral of the Holy Wisdom |
| Istanbul |  Saint-Antoine de Padoue (Minor Basilica, Parish) Sent Antuan Kilisesi Basilica of St. Anthony of Padua |
| Istanbul | Assumption of Mary |
| Istanbul | Holy Saviour |
| Istanbul | Our Lady of Lourdes Bomonti Gürcü Katolik Kilisesi |
| Istanbul | Sacré Coeur |
| Istanbul | St. Augustine |
| Istanbul | St. Benedict |
| Istanbul | St. Mary Draperis |
| Istanbul | Sts. Peter and Paul |
| Istanbul | Virgin Mary |
| İznik | Hagia Sophia |
| İznik | St. Neophytos |
| Pendik | Mater Dolorosa |
| Sarıyer | Santa Maria |
| Cities | Other Churches Within the Diocesan Territory (7) |
| Adalar |  Assumption of the Virgin Mary (Armenian) Surp Asdvadzadzin Verapokhum Church |
| Istanbul |  Holy Trinity (Cathedral) (Chaldean) |
| Istanbul | Sacred Heart (Cathedral) (Syriac) |
| Istanbul | Sainte Marie de Sakızağaç (Cathedral) (Armenian) St. Mary of Sakızağaç Armenian Cathedral Sakızağaç Kutsal Meryem Ana Katedralı |
| Istanbul | St. John Chrysostom (Armenian) |
| Istanbul | St. John the Baptist (Armenian) |
| Istanbul | St. Leo (Armenian) |
Last updated on 2025.12.22
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