(Γνάθαινα), a celebrated Greek hetaera, of whom some witty sayings are recorded by Athenaeus (xiii. p. 585). She wrote a νόμος συσσιτικός, in the same fashion as νόμοι were commonly written by philosophers. It consisted of 323 lines, and was incorporated by Callimachus in his πίναξ τῶν νόμων.