Dorotheus of Tyre was a 4th-century bishop and priest from Antioch who is recognized as a hieromartyr. Born around 255, he was a learned man and a eunuch who lived through significant religious shifts in the Roman Empire. He is traditionally credited with composing the Acts of the Seventy Apostles. After being exiled during the persecutions of Diocletian, he eventually returned to service and participated in the Council of Nicaea in 325.