Petralia Sottana (Sicilian: Pitralìa Suttana) is a town and comune in the Metropolitan City of Palermo, in the island of Sicily, Southern Italy.

The first traces of human settlement date back to the 4th/3rd millennium BC (Neolithic and Eneolithic periods) as evidenced by the archaeological finds in the nearby Grotta del Vecchiuzzo.

In much closer times there must have been an indigenous settlement, strongly influenced by the nearby Greek colony of Imera, in whose excavations a bronze coin was found, the Petrinon which bears the name of the city of Petra.

[3] In the 3rd century BC, with the Roman conquest, Petra became a "decumanus" city and a center of some importance as a military garrison and agricultural market, as evidenced by several writings of the time (among others Cicero in the "Verrine" and Diodorus Siculus) and by a few archaeological finds.

It is bounded by the communes of Alimena, Blufi, Caltanissetta, Castelbuono, Castellana Sicula, Geraci Siculo, Isnello, Marianopoli, Petralia Soprana, Polizzi Generosa, Resuttano, Santa Caterina Villarmosa, Villalba.