For other uses, see Eryx (disambiguation).
In Greek mythology, Eryx was a king of the city of Eryx in Sicily. He was either the son of Poseidon, or of Aphrodite and Butes the Argonaut of the Elymian people of Sicily who she spent several nights with at Lilybaeum to make Adonis jealous. Eryx was an excellent boxer but died when Heracles beat him in a match.
A different Eryx, one of the supporters of Phineus, was turned to stone by Perseus with the head of the Gorgon Medusa.