| 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 |
| Athens (Αθήνα), Attica |  Cathedral of the Holy Trinity |
| Athens (Αθήνα), Attica | 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 |
