Emathia (Greek: Ἠμαθία, romanized: ēmathía) is an ancient toponym for an area of Macedonia on the Thermaic Gulf between the Pierian range and the Axius (Vardar). Some ancient geographers give it as the name of a town in the region, or as a name in alternation with Macedon. In later poetic use, the name may vaguely refer to regions as disparate as Thessaly and Thrace. Etymologically, the homeric name suggests the meaning "sandy." It was used by several classical authors as a synonym for Bottiaea or even all of Macedon. The Imathia regional unit of Greece is named after the historic region's name.