Andritsaina (Greek: Ανδρίτσαινα) is a town and a former municipality in Elis, West Greece, Greece. Since the 2011 local government reform it is part of the municipality Andritsaina-Krestena, of which it is a municipal unit.^[2] The municipal unit has an area of 131.247 km.

Andritsaina is situated in mountainous southeastern Elis, on the borders with Arcadia and Messenia. The town is built on a hillside, northwest of mount Lykaion. The river Alfeios forms the northeastern border of the municipal unit. The predominant land uses in the municipal unit are forestry and small scale farming. Andritsaina is 22 km northwest of Megalopoli, 28 km southeast of Krestena, 41 km west of Tripoli and 46 km southeast of Pyrgos. The Greek National Road 76 (Krestena - Karytaina - Megalopoli) runs through Andritsaina.