(Ἀρτώριος), a physician at Rome, who was one of the followers of Asclepiades (Cael. Aurel. De Morb. Acut. 3.14, p. 224), and afterwards became the friend and physician of Caesar Octavianus. He attended him in his campaign against Brutus and Cassius, B. C. 42, and it was by his advice, in consequence of a dream, that Octavianus was persuaded to leave his camp and assist in person at the battle of Philippi, notwithstanding a severe indisposition. This was probably the means of saving his life, as that part of the army was cut to pieces by Brutus. (Vell. Paterc. 2.70; Plut. Brut. 100.41, where some editions have Antonius instead of Artorius; Lactant. Divin. Instit. 2.8; D. C. 47.41; Valer. Max. 1.7.1; Tertull. De Anima, 100.46; Sueton. Aug. 100.91; Appian, De Bell. Civil. 4.110; Florus, 4.7.) He was drowned at sea shortly after the battle of Actium, B. C. 31. (S. Hieron. in Euseb. Chron.)