| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Obraztsov Chiflik | city | Ruse | Bulgaria | 43.83 | 25.95 | 285 | 102633 |
| Obretenik | city | Ruse | Bulgaria | 43.58 | 25.82 | 843 | 2795 |
| Obryetenik | city | Ruse | Bulgaria | 43.58 | 25.82 | 843 | 2795 |
| Orjechovo | city | Ruse | Bulgaria | 43.98 | 26.25 | 72 | 4574 |
| Ostritsa | city | Ruse | Bulgaria | 43.53 | 25.97 | 308 | 3427 |
| Ostriza | city | Ruse | Bulgaria | 43.53 | 25.97 | 308 | 3427 |
| Otantsi | city | Ruse | Bulgaria | 43.83 | 26.23 | 830 | 4626 |