IOPHON, Greek tragic poet, son of Sophocles. He gained the second prize in 428 B.C., Euripides being first, and Ion third. In the Frogs of Aristophanes (405) he is spoken of as the only good Athenian tragic poet. He wrote so plays, of which only a few fragments remain. It is said that Iophon accused his father of being incapable of managing his affairs and that Sophocles was triumphantly acquitted, on reading the famous chorus of the Oedipus at Colonus (688 ff.).
See Aristophanes, Frogs, 73, 78, with scholia; • Cicero, De senectute, Vii. 22 ; Plutarch, Moralia, 785, B; 0. Delophonte poeta (Leip zig, 1884) ; A. Nauck, Tragicorum Graecorum fragmenta 0880 .