Stephen II (died 799) was the duke of Naples during an important transitional period in its history, from 755 to his death.
In 761, therefore, she denied entry to the papal envoy, the Bishop Paul, an opponent of the iconoclasm then gripping the Byzantine world.
At that time, Stephen addressed Antiochos, the patrician of Sicily and his technical overlord, as "our lord" and "most excellent patrikios and protostrategos" (763).
After twelve years of peaceful government, during which he gained much popularity with the people, a plague hit the city of Naples and decimated the citizenry and the clergy, including the bishop himself.
Though he ceased to be duke, he continued to act as bishop for thirty-three years and he transferred the duchy to his son Gregory.