| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Оксилитос | city | Sterea Ellada | Greece | 38.58 | 24.11 | 396 | 3976 |
| Октония | city | Sterea Ellada | Greece | 38.53 | 24.16 | 1725 | 2549 |
| Ореи | city | Sterea Ellada | Greece | 38.95 | 23.09 | 124 | 4842 |
| Орио | city | Sterea Ellada | Greece | 38.53 | 24.12 | 150 | 3463 |
| Орологио | city | Sterea Ellada | Greece | 38.53 | 24.09 | 318 | 3458 |
| Орхомен | city | Sterea Ellada | Greece | 38.49 | 22.98 | 328 | 8029 |