Date | Country | Change |
| 1911.06.11 |  Turkiye | Apostolic Exarchate of Turkey of Europe (Greek Rite) was established |
| 1920 | Turkiye | Titular Episcopal See of Theodosiopolis (Greek Rite) was established |
| 1921 | Turkiye | Titular Episcopal See of Theodosiopolis (Greek Rite) was renamed as Titular Episcopal See of Theodoropolis |
| 1925 | Turkiye | Titular Episcopal See of Theodoropolis (Greek Rite) was renamed as Titular Episcopal See of Theodorium |
| 1932.06.11 |  Greece | Apostolic Exarchate of Greece (Greek Rite) was established (from Apostolic Exarchate of Turkey of Europe) |
| 1933 | Turkiye | Titular Episcopal See of Theodorium (Greek Rite) was suppressed |
| 1936 | Turkiye | Apostolic Exarchate of Turkey of Europe (Greek Rite) was renamed as Apostolic Exarchate of Istanbul |
