(Διόδωρος), a Greek physician, who must have lived some time in or before the first century after Christ, as he is quoted by Pliny. (H. N. 29.39.) He may perhaps be the same person who is said by Galen (de Meth. Med. 2.7, vol. x. p. 142) to have belonged to the medical sect of the Empirici, and whose medical formulae he several times quotes. (De Compos. Medicam. sec. Locos, 5.3, vol. xii. p. 834; 10.3, vol. xiii. p. 361.)