In Greek mythology, Alcyoneus or Alkyoneus (; ) may refer to the following characters:

Alcyoneus, one of the Gigantes and an opponent of Heracles.Apollodorus, 1.6.1-2 Alcyoneus, son of Diomus, who was intended as a sacrifice to the monster Sybaris.Antoninus Liberalis, 8 as cited in Boeus' Ornithogonia Alcyoneus, an alternate name for Ischys, the son of Elatus and Hippea, and also the lover of Coronis.Antoninus Liberalis, 20 with reference to Boeus, Book 2 and Simmias of Rhodes, Apollo Alcyoneus, a member of the Ethiopian army who followed their leader, King Memnon, to fight on the side of the Trojans during the Trojan War.Quintus Smyrnaeus, 2.364

References