In Greek mythology, Celaenus (Ancient Greek: Κελαινός Kelainos) may refer to the following figures: * Celaenus, son of Poseidon and the Danaid Celaeno. * Celaenus, son of the autochthon and father of Caucon. * Celaenus or Celaeneus, father of , the possible spouse of Miletus and mother of Byblis and Caunus.