| Alia | |
| Official Name: | Comune di Alia |
| Coordinates: | 37.7833°N 56°W |
| Metropolitan City: | Palermo (PA) |
| Mayor: | Felice Guglielmo |
| Area Total Km2: | 45 |
| Population Total: | 3588 |
| Population As Of: | 30 November 2016 |
| Population Demonym: | Aliesi |
| Elevation M: | 700 |
| Saint: | Our Lady of Grace |
| Day: | 2 July |
| Postal Code: | 90021 |
| Area Code: | 091 |
Alia (Sicilian: Àlia) is a comune in the Metropolitan City of Palermo, on the Italian island of Sicily. It is known for the Grotte Della Gurfa, or Gurfa Caves Urban Reserve.