| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Opagna | city | Italy | 42.65 | 13.10 | 3914 | 1415 | |
| Opera | city | Italy | 45.37 | 9.20 | 262 | 209700 | |
| Opi | city | Italy | 42.25 | 13.60 | 2926 | 2665 | |
| Opi | city | Italy | 41.78 | 13.83 | 3645 | 1989 | |
| Oppeano | city | Italy | 45.30 | 11.18 | 68 | 13044 | |
| Oppido Lucano | city | Italy | 40.78 | 16.00 | 1653 | 4835 | |
| Oppido Mamertina | city | Italy | 38.28 | 18.98 | 0 | 0 |