Teuthis (Ancient Greek: Τεύθις) was a city in ancient Arcadia. It was part of the region of Orchomenus. It was abandoned when Megalopolis was founded. There were sanctuaries of Athena, Aphrodite and Artemis in the town. It was in the location of modern Dimitsana.
Its residents participated in the Trojan War under a general who was named Teuthis or Ornytus. When the Greeks were stuck in Aulis because of unfavourable winds, Teuthis fought with Agamemnon and decided to return home with his army. The goddess Athena appeared in the form of Melas and tried to dissuade him, but he would not change his mind; he was outraged and hit the goddess in the thigh with a spear. He then did return home but not much later, he dreamt of Athena with a wound in her thigh; the goddess punished him with an incurable headache and struck Arcadia with famine. Later, the city residents visited the oracle of Dodona and accordingly built the statue of Athena with a bandage on the thigh as an appeasement.
The ancient acropolis has been excavated, and several ancient buildings have been found scattered throughout the town Dimitsana.