Cynaetha (Ancient Greek: Κύναιθα) was a city-state in ancient Arcadia. The northernmost town of Arcadia, it bordered on the territories of Cleitor and Pheneus. It was located near present Kalavryta. It was located 40 stades (6 km) from Lousoi.
It was destroyed by the Aetolians in the Social War (220–217 BC), but it was rebuilt afterwards. When Pausanias visited the city it had a sanctuary of Dionysus and a statue of emperor Hadrian. The Cynaetheans gave to Olympia the statue of Zeus which held a thunder in his hand. There was a spring near Cynaetha named Alyssus (Άλυσσος), which was to cure from rabies.
- Smith, William, ed. (1854). "Cynaetha". Dictionary of Greek and Roman Geography 1. London: John Murray. p. 725.
- Pausanias, Description of Greece, 8.19