Iraia (Greek: Ηραία) is a former municipality in Arcadia, Peloponnese, Greece. Since the 2011 local government reform it became a municipal unit of the municipality of Gortynia. It consists of 27 villages. Population 3,063 (2001). The seat of the municipality was in Paloumpa. The municipality is named after the ancient Arcadian city of Heraia. The region was known in recent times for the construction workers (mastori) who came from the villages of Servos and Lyssarea. Pausanias describes the ancient cities of Heraia and Melaineai and their buildings. An excavation near Lyssarea uncovered buildings, mosaics, as well as gold and silver coins.