Saint Alphius (in Italian: Sant'Alfio) or (Sicilian: Sant'Arfiu) is a comune (municipality) in the Metropolitan City of Catania in the Italian region Sicily, about 160 kilometres (99Â mi) east of Palermo and about 25 kilometres (16Â mi) north of Catania.
Saint Alphius borders the following municipalities: Adrano, Belpasso, Biancavilla, Bronte, Castiglione di Sicilia, Giarre, Linguaglossa, Maletto, Mascali, Milo, Nicolosi, Piedimonte Etneo, Randazzo, Zafferana Etnea.