Search by Places
| Obereggen | (BZ) | Trentin-Haut Adige | |
| Oggebbio | (VB) | Piémont | |
| Olbia | (OT) | Sardaigne | |
| Olia Speciosa | (CA) | Sardaigne | |
| Oliveto Citra | (SA) | Campanie | |
| Olmedo | (SS) | Sardaigne | |
| Opi | (AQ) | Abruzzes | |
| Ora | (BZ) | Trentin-Haut Adige | |
| Orbetello | (GR) | Toscane | |
| Orgosolo | (NU) | Sardaigne | |
| Oristano | (OR) | Sardaigne | |
| Orosei | (NU) | Sardaigne | |
| Orsomarso | (CS) | Calabre | |
| Orta San Giulio | (NO) | Piémont | |
| Orte | (VT) | Latium | |
| Ortisei | (BZ) | Trentin-Haut Adige | |
| Orvieto | (TR) | Ombrie | |
| Ostellato | (FE) | Emilie-Romagne | |
| Ostra | (AN) | Marches | |
| Ostuni | (BR) | Pouilles | |
| Otranto | (LE) | Pouilles | |
| Ovada | (AL) | Piémont | |
| Ovindoli | (AQ) | Abruzzes | |
| Ozieri | (SS) | Sardaigne | |
| Ozzano dell'Emilia | (BO) | Emilie-Romagne |
