Aëtius of Antioch, (Aëtius Antiochenus, Αέτιος ο Αντιοχεύς), was the founder of an extreme sect of Arians in mid fourth century the members of which became known as Anomoeans. Aëtius was a Syrian bishop and heretic who asserted that Jesus of Nazareth (the Son) was of a different nature and in no way like to that of God (the Father). His pupil Eunomius became the leader of the sect after Aëtius’ death.