Auxentius of Bithynia was a 5th-century monk and ascetic who lived in the Byzantine Empire. Born in Syria to Persian parents around 400, he initially served in the Equestrian Guard under Emperor Theodosius II. He later abandoned this life to seek solitude as a hermit on Mount Oxia. After participating in the Council of Chalcedon in 451, he moved to Mount Scopas in Bithynia, where he spent his remaining years teaching disciples and practicing strict mortification.