(Ἀρίστων), a physician, of whose life no particulars are known, but who probably lived in the fifth century B. C., as Galen mentions him (Comment. in Hippocr. " De Rat. Vict. in Morb. Acut." 1.17, vol. xv. p. 455) with three other physicians, who all (he says) lived in old times, some as contemporaries of Hippocrates, and the others before him. Galen also says that he was by some persons supposed to be the author of the work in the Hippocratic Collection entitled , de Salubri Victus Ratione. (l.c.; De Aliment. Facult. 1.1, vol. vi. p. 473; Comment. in Hippocr. " Aphor." 6.1, vol. xviii. pt.i. p. 9.) A medical preparation by a person of the same name is quoted by Celsus (De Medic. 5.18. p. 88) and Galen. (De Compos. Medicam. sec. Locos, 9.4. vol. xiii. p. 281.) The Ariston of (Chios, mentioned by Galen (De Hippocr. et Plat. Decret. 5.5, 7.1, 2, vol. v. pp. 468, 589, 596), is a different person.