Hyettus or Hyettos (Ancient Greek: Ὕηττος) was a village in ancient Boeotia, Greece. According to Pausanias, who visited the site in the 2nd century CE, it was located near Lake Copais, at 7 stadia from Olmones and 20 stades from Cyrtones. There was a temple of Heracles in the village, frequented by the sick for the cure of their diseases, with the deity worshiped in the form of a rude stone. An inscription built into the chapel of Agios Nikolaos south of the acropolis attests to a cult of Savior Asklepios in the 2nd century CE.