| Montallegro | |
| Official Name: | Comune di Montallegro |
| Coordinates: | 37.4°N 34°W |
| Region: | Sicily |
| Province: | Agrigento (AG) |
| Mayor: | Caterina Scalia |
| Area Total Km2: | 27.41 |
| Population Total: | 2498 |
| Population As Of: | 30 October 2017[1] |
| Population Demonym: | Montallegresi |
| Elevation M: | 100 |
| Postal Code: | 92010 |
| Area Code: | 0922 |
Montallegro (Sicilian: Muntallegru) is a comune (municipality) in the Province of Agrigento in the Italian region Sicily, located about 128km (80miles) south of Palermo and about 31km (19miles) northwest of Agrigento.
Montallegro borders the following municipalities: Agrigento, Cattolica Eraclea, Siculiana.