Eëtion may refer to:
In Greek mythology: Eëtion, king of the Cilician Thebe mentioned in the Iliad Eëtion, ruler over the island of Imbros mentioned in the Iliad; he buys Priam's captured son Lycaon and restores him to his father Eëtion, a Greek soldier who was killed by Paris
In Greek history: Eëtion, the father of Cypselus, the first tyrant of Corinth.
In biology: Eetion (skipper), a genus of grass skipper butterflies of the tribe Erionotini