Stymphalia (;
Stymphalos) is a village and a former municipality in
Corinthia,
Peloponnese,
Greece. Since the 2011 local government reform it is part of the municipality
Sikyona, of which it is a municipal unit. Population 2,852 (2001). The seat of the municipality was in Kalianoi, 41 km southwest of the town of
Kiato. The municipality occupies a mountain valley with an average altitude of 600 metres.
Mount Kyllene dominates it to the north east, rising to c. 2400 metres. The largest village is Lafka, but the principal antiquities are just south of the modern village of Stymphalia, a hamlet of c. 100 inhabitants.