Alexander of Tralles (Medieval Greek: Ἀλέξανδρος ὁ Τραλλιανός; ca. 525 – ca. 605) was one of the most eminent physicians in the Byzantine Empire. His birth date may safely be put in the 6th century AD, for he mentions Aëtius Amidenus,[1] who probably did not write until the end of the 5th or the beginning of the 6th century, and he is himself quoted by Paul of Aegina,[2] who is supposed to have lived in the 7th century; besides which, he is mentioned as a contemporary of Agathias,[3] who set about writing his History in the beginning of the reign of Justin II, about 565.[4]