| Home page | NIKA_ROOT | Eparhii |
| Eparhiya-_TO | Eparhiya | UchrKem | UchrKogda | EpPrizn | EpPrim |
|---|---|---|---|---|---|
| Ovruchskaya | Volinskoe (Zhitomirskoe) vik. | - | - | - | |
| Odesskaya | - | 1837 g. | - | Imen.: Hersonskaya i Tavricheskaya; Odesskaya i Hersonskaya; Hersonskaya i Odesskaya. | |
| Odesskaya (obn.) | - | 1922 g. | Obn. | - | |
| Ojrotskaya (obn.) | - | - | Obn. | - | |
| Olonetskaya Sm.: Petrozavodskaya i Olonetskaya | - | - | - | - | |
| Olonetskaya (obn.) | - | - | Obn. | - | |
| Omskaya | - | 1895 g. | - | Imen.: Omskaya i Pavlodarskaya; Omskaya i Semipalatinskaya; Oms. i Akmolinskaya; Oms. i Tyumenskaya. | |
| Omskaya (grig.) | - | 1925 g. | Grig. | - | |
| Omskaya (obn.) | - | 1922 g. | Obn. | Imenovalas' Omskaya i Tarskaya | |
| Ordzhonikidzenskaya | - | - | - | - | |
| Ordzhonikidzenskaya (obn.) | - | - | Obn. | - | |
| Orenburgskaya | - | 1799 g. | - | - | |
| Orenburgskaya (obn.) sm. Chkalovskaya | - | - | Obn. | - | |
| Orehovo-Zuevskaya | Moskovskoe vik. | - | - | - | |
| Orehovo-Zuevskaya (obn.) | Moskovskoe vik. | - | Obn. | - | |
| Orlovskaya | Moskovskoe vik., Sevskoe i Bryanskoe | 1764 g. | - | - | |
| Orlovskaya (obn.) | - | 1922 g. | Obn. | - | |
| Orskaya | Orenburgskoe (Chkalovskoe) vik. | - | - | - |