| City | Churches |
| Andros (Άνδρος), Southern Aegean |  Co-Cathedral of St. Andrew 
|
| Ano Syros (Άνω Σύρος), Southern Aegean |  Cathedral of St. George
|
| Athens (Αθήνα), Attica |  Cathedral Basilica of St. Dionysius the Areopagite
 Cathedral of the Holy Trinity
Armenian Church of St. Gregory the Illuminator
|
| Chania (Χανιά), Crete | Cathedral of the Assumption of the Blessed Virgin Mary
|
| Chios (Χίος), Northern Aegean | Cathedral of St. Nicolas
|
| Corfu (Κέρκυρα), Ionian Islands | Cathedral of St. James and St. Christopher
|
| Fira (Φηρά), Southern Aegean | Cathedral of St. John the Baptist
|
| Mikonos (Μύκονος), Southern Aegean | Co-Cathedral of Our Lady of the Rosary
|
| Naxos (Νάξος), Southern Aegean | Co-Cathedral of the Presentation of the Lord
|
| Rhodes (Ρόδος), Southern Aegean | Cathedral of St. Francis of Assisi
|
| Thessaloniki (Θεσσαλονίκη), Central Macedonia | Cathedral of the Immaculate Conception
|
| Xinara (Ξινάρα), Southern Aegean | Cathedral of Our Lady of the Rosary
|
