(Διόμος), an Andrian refugee, probably of military reputation, placed by the Syracusans at the head of a force of 600 picked men in the spring of B. C. 414. He fell in the first exercise of his command, when the Athenians made their landing at Epipolae, in endeavouring to dislodge them from Euryelus. (Thuc. 6.96.)