In Greek mythology, Boeotus (; Boiotos) was the eponym of Boeotia in Greece. Poseidon fathered both Aeolus and Boeotus with Arne (Melanippe). It was then through Boeotus that Arne became the ancestress of the Boeotians. In some traditions Boeotus is the father of Ogyges.