Giuliano Maffei, O.F.M. or Giuliano Matteis (died 1510) was a Roman Catholic prelate who served as Archbishop of Dubrovnik (1505âÂÂ1510) and Bishop of Bertinoro (1477âÂÂ1505).
Giuliano Maffei was ordained a priest in the Order of Friars Minor. On 24 Jan 1477, he was appointed during the papacy of Pope Sixtus IV as Bishop of Bertinoro. On 18 Apr 1505, he was appointed during the papacy of Pope Julius II as Archbishop of Dubrovnik. He served as Archbishop of Dubrovnik until his death in 1510.