Andritsaina is a town in Elis, West Greece, Greece. 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.
Τoday, the village has impressive old mansions, cobblestone streets, a square surrounded by tall trees and magnificent views. The fountain in the square (I Trani Vrysi) is the Peloponnese's oldest fountain, built in 1724.
The famous Nikolopouleios library was founded in 1840 from donations of the humanist Agathofron Nikolopoulos, whose family came from Andritsaina. Its collection comprises rare 16th- and 17th-century manuscripts, in Greek and in foreign languages, important documents from the period of the Greek War of Independence and rich folklore material. Today, the library has more than 40000 volumes.
The famous Temple of Epicurian Apollo at Bassae is 6 km south of Andritsaina, in Messenia.