| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Ονιάρα | city | Honiara | Soloman Islands | -9.43 | 159.95 | 98 | 67485 |
| Ονιθέ | city | Kriti | Greece | 35.27 | 24.50 | 1899 | 5319 |
| Οντένσε | city | Syddanmark | Denmark | 55.39 | 10.39 | 49 | 43849 |
| Οντενάρντ | city | Vlaanderen | Belgium | 50.85 | 3.61 | 45 | 30704 |
| Ονφλέρ | city | Basse-Normandie | France | 49.42 | 0.23 | 78 | 17542 |