In Greek mythology, Hylas (Greek: Ύλας) was the son of King Theioamas of the Dryopians. Other sources such as Ovid state that Hylas' father was Heracles and his mother was the nymph Melite, or that his mother was the wife of Theiodamus, whose adulterous affair with Heracles caused the war between him and her husband. He gained his beauty from his divine mother and his military prowess from his demigod father.