In Greek mythology, Eioneus (Ancient Greek: Ἠιονεύς) is a name attributed to the following individuals:
- Eioneus, the Perrhaebian[1] father of Dia,[2] see Deioneus.
- Eioneus, son of Magnes[3] and Philodice, and brother of Eurynomus.[4] He was one of the suitors of Hippodamia and like all the other suitors before Pelops, he was killed by the princess' father, King Oenomaus of Pisa.[3]
- Eioneus, son of the sea-god Proteus and father of the Phrygian king Dymas, father of Hecuba.[5]
- Eioneus, the presumed mythological eponym of the Thracian city of Eion. This character was the father of Rhesus, according to Homer.[6] One source[7] identifies him with Strymon, who was more commonly known as father of Rhesus.
- Eioneus, a Greek warrior in the Trojan War who was killed by Hector using a sharp spear which smote his neck.[8]
- Eioneus or Eion, a Trojan warrior who was killed by Neoptolemus.[9]