| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Óasi | city | Dytiki Ellada | Greece | 38.08 | 22.34 | 2063 | 2468 |
| Óasis | city | Dytiki Ellada | Greece | 38.08 | 22.34 | 2063 | 2468 |
| Óchthia | city | Dytiki Ellada | Greece | 38.66 | 21.28 | 127 | 5717 |
| Ólena | city | Dytiki Ellada | Greece | 37.74 | 21.56 | 334 | 5173 |
| Ólga | city | Dytiki Ellada | Greece | 37.90 | 21.35 | 75 | 6893 |