Doris (Greek: : Eth. , pl. , ; , Dorienses) is a small mountainous district in ancient Greece, bounded by Aetolia, southern Thessaly, the Ozolian Locris, and Phocis; the original homeland of the Dorian Greeks. It lies between Mounts Oeta and Parnassus, and consists of the valley of the river Pindus (), a tributary of the Cephissus, into which it flows not far from the sources of the latter. The Pindus is now called the Apostoliá. This valley is open towards Phocis; but it lies higher than the valley of the Cephissus, rising above the towns of Drymaea, Tithronium, and Amphicaea, which are the last towns in Phocis.