(Εὔνομος), an Athenian, was sent out in command of thirteen ships, in B. C. 388, to act against the Lacedaemonian Gorgopas, vice-admiral of Hierax. and the Aeginetan privateers. Gorgopas, on his return from Ephesus, whither he had escorted ANTALCIDAS on his mission to the Persian court, fell in with the squadron of Eunomus, which chased him to Aegina. Eunomus then sailed away after dark, and was pursued by Gorgopas, who captured four of his triremes, in an engagement off Zoster, Attica, while the rest escaped to the Peiraccus (Xen. Hell. v. 1. §§ 5-9). This was. perhaps, the same Eunomus whom Lysias mentions (pro bon. Arist. pp. 153, 154) as one of those sent by Conon to Sicily, to persuade Dionysius 1. to form an alliance with Athens against Sparta. The mission was so far successful, that Dionysius withheld the ships which he was preparing to despatch to the aid of the Lacedaeonians.