| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Овидиу | city | Constanta | Romania | 44.27 | 28.57 | 3 | 39280 |
| Овідіу | city | Constanta | Romania | 44.27 | 28.57 | 3 | 39280 |
| Ойтуз | city | Constanta | Romania | 44.38 | 28.53 | 114 | 5684 |
| Олтень | city | Constanta | Romania | 43.92 | 28.03 | 830 | 1184 |
| Олтіна | city | Constanta | Romania | 44.17 | 27.67 | 203 | 2026 |
| Османча | city | Constanta | Romania | 44.02 | 28.32 | 82 | 2290 |