| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Олиас-дель-Рей | city | Castilla-La Mancha | Spain | 39.95 | -3.99 | 1876 | 11052 |
| Онтанайя | city | Castilla-La Mancha | Spain | 39.72 | -2.84 | 2621 | 1029 |
| Онтаная | city | Castilla-La Mancha | Spain | 39.72 | -2.84 | 2621 | 1029 |
| Оргас | city | Castilla-La Mancha | Spain | 39.65 | -3.88 | 2509 | 1626 |
| Оса-де-ла-Вега | city | Castilla-La Mancha | Spain | 39.66 | -2.76 | 2509 | 999 |