PIERIA, in Ancient Geography, a district of Macedonia, contained between the mouths of the rivers Luidas and Peneus; extended by Strabo beyond the Luidas, to the river Axios on the north, and on the south no farther than the Alimmon, along the west side of the Sinus Thermaicus.—Another Pieris of Syria, the north part of Seleucia, or the Antiochena, situated on the Sinus Islicus, and lying next Cilicia to the northwest.