PIERIA (anc. geog.), a district of Macedonia, contained between the mouths of the rivers Ludias and Penceus; extended by Strabo beyond the Ludias, to the river Axios on the north, and on the south no farther than the Aliaemon, along the west side of the Sinus Thermaicus.—Another Pieria of Syria, the north part of Seleucis, or the Antiochena, situate on the Sinus Illicus, and lying next Cilicia to the north-west.