Aetolus (Ancient Greek: Αἰτωλός) was, in Greek mythology, a son of Endymion, grandson of Deucalion, and a Naiad nymph, or Iphianassa. According to Pausanias, his mother was called Asterodia, Chromia or Hyperippe. He was married to Pronoe, by whom he had two sons, Pleuron and Calydon. His brothers were Paeon, Epeius, and others. His father compelled him and his two brothers Paeon and Epeius to decide by a contest at Olympia as to which of them was to succeed him in his kingdom of Elis. Epeius gained the victory, and occupied the throne after his father, and on his demise he was succeeded by Aetolus. During the funeral games which were celebrated in honor of Azan, he ran with his chariot over Apis, the son of Jason or Salmoneus, and killed him, whereupon he was expelled by the sons of Apis.