| Aci Sant'Antonio | |
| Official Name: | Comune di Aci Sant'Antonio |
| Coordinates: | 37.6°N 22°W |
| Region: | Sicily |
| Metropolitan City: | Catania (CT) |
| Frazioni: | S.Maria La Stella, Monterosso Etneo, Lavinaio, Lavina |
| Mayor: | Quintino Rocca |
| Area Total Km2: | 14.3 |
| Population Total: | 18054 |
| Population As Of: | 31 July 2016[1] |
| Population Demonym: | Santantonesi |
| Elevation M: | 302 |
| Saint: | St. Anthony Abbot |
| Day: | 17 January |
| Postal Code: | 95025 |
| Area Code: | 095 |
Aci Sant'Antonio (scn|Jaci Sant'Antoniu) is a comune (municipality) in the Metropolitan City of Catania in the Italian region of Sicily, located about 160km (100miles) southeast of Palermo and about 10km (10miles) northeast of Catania.
The frazione of Santa Maria La Stella is home to an annual Presepe degli Antichi Mestiere, which is a presepe vivente or animated crib that is presented every Christmas by the parish and visited by many people from all over Sicily.