Archaia Nemea is a village in Nemea Municipality, in the regional unit of Corinthia, in the region of Peloponnese, Greece. Archaia Nemea lies at 336 m above sea level, in the Peloponnese mountains, on the Peloponnese peninsula. It has 309 inhabitants (2021). The nearest city is Argos, 19.2 km to the south. Among the landmarks around are Mycenae (9.5 km), Tiryns (25 km) and Nemea (0.4 km).

Also written Αρχαία Νεμέα.