| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Όαση | city | Peloponnisos | Greece | 38.00 | 22.95 | 0 | 6696 |
| Όασις | city | Peloponnisos | Greece | 38.00 | 22.95 | 0 | 6696 |
| Όνειρο | city | Peloponnisos | Greece | 37.93 | 23.03 | 95 | 9341 |
| Όχθια | city | Peloponnisos | Greece | 37.66 | 21.90 | 2509 | 1525 |
| Όχτος | city | Peloponnisos | Greece | 37.05 | 22.90 | 2582 | 688 |