Search by Places
| Obereggen | (BZ) | Trentino-Alto Adige-South Tyrol | |
| Oggebbio | (VB) | Piedmont | |
| Olbia | (OT) | Sardinia | |
| Olia Speciosa | (CA) | Sardinia | |
| Oliveto Citra | (SA) | Campania | |
| Olmedo | (SS) | Sardinia | |
| Opi | (AQ) | Abruzzo | |
| Ora | (BZ) | Trentino-Alto Adige-South Tyrol | |
| Orbetello | (GR) | Tuscany | |
| Orgosolo | (NU) | Sardinia | |
| Oristano | (OR) | Sardinia | |
| Orosei | (NU) | Sardinia | |
| Orsomarso | (CS) | Calabria | |
| Orta San Giulio | (NO) | Piedmont | |
| Orte | (VT) | Latium | |
| Ortisei | (BZ) | Trentino-Alto Adige-South Tyrol | |
| Orvieto | (TR) | Umbria | |
| Ostellato | (FE) | Emilia-Romagna | |
| Ostra | (AN) | Marche | |
| Ostuni | (BR) | Apulia | |
| Otranto | (LE) | Apulia | |
| Ovada | (AL) | Piedmont | |
| Ovindoli | (AQ) | Abruzzo | |
| Ozieri | (SS) | Sardinia | |
| Ozzano dell'Emilia | (BO) | Emilia-Romagna |
