LESBONAX, of Mytilene, Greek sophist and rhetorician, flourished in the time of Augustus. According to Photius (cod. 74) he was the author of sixteen political speeches, of which two are extant, a hortatory speech after the style of Thucydides, and a speech on the Corinthian War. In the first he exhorts the Athenians against the Spartans, in the second (the title of which is misleading) against the Thebans (edition by F. Kiehr, Lesbonactis quae supersunt, Leipzig, 1907). Some erotic letters are also attributed to him.
The Lesbonax described in Suidas as the author of a large number of philosophical works is probably of much earlier date; on the other hand, the author of a small treatise Περὶ Σχημάτων on grammatical figures (ed. Rudolf Müller, Leipzig, 1900), is probably later.