(Εὔδικος), a Thessalian of Larissa, probably one of the family of the Aleuadae. Like most of his house, he was a devoted adherent of Philip of Macedon, and in B. C. 344 aided him in effecting the division of Thessaly into four tetrarchies, at the head of one of which he was himself placed. Demosthenes stigmatizes him as a traitor to his country. The division above named had the effect of reducing Thessaly entirely under the controul of Philip. (Dem. de Coron. p. 241; Harpocrat. s. v. Εὔδικος; Buttmann, Mythologus, vol. ii. p. 288, &c.; Böckh, Explic. ad Pind. Phth. x. p. 333.)