| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Oliva | city | Extremadura | Spain | 40.11 | -6.09 | 1128 | 2738 |
| Oliva de Frontera | city | Extremadura | Spain | 38.28 | -6.92 | 1230 | 2375 |
| Oliva de Jerez | city | Extremadura | Spain | 38.28 | -6.92 | 1230 | 2375 |
| Oliva de Mérida | city | Extremadura | Spain | 38.79 | -6.12 | 1164 | 1480 |
| Oliva de Plasencia | city | Extremadura | Spain | 40.11 | -6.09 | 1128 | 2738 |
| Oliva de la Frontera | city | Extremadura | Spain | 38.28 | -6.92 | 1230 | 2375 |
| Olivenza | city | Extremadura | Spain | 38.68 | -7.10 | 856 | 4985 |
| Olivenza - Olivença | city | Extremadura | Spain | 38.68 | -7.10 | 856 | 4985 |
| Orellana la Sierra | city | Extremadura | Spain | 39.03 | -5.50 | 1181 | 2846 |
| Orellana la Sierra u Orellanita | city | Extremadura | Spain | 39.03 | -5.50 | 1181 | 2846 |
| Orellana la Vieja | city | Extremadura | Spain | 39.01 | -5.53 | 997 | 4075 |
| Ovejuela | city | Extremadura | Spain | 40.31 | -6.44 | 2509 | 931 |