Peter (1140/1150 – 2 September 1216) was an Italian Cistercian monk and prelate. He was the abbot of Rivalta from 1180 until 1185, abbot of Lucedio (as Peter II) from 1185 until 1205, abbot of La Ferté (as Peter II) from 1205 until 1206, bishop of Ivrea from 1206 until 1208 and patriarch of Antioch (as Peter II) from 1209 until his death. He is known as Peter of Magnano, Peter of Lucedio or Peter of Ivrea.
Peter had a reputation as an administrator and mediator. He consolidated the properties of his abbeys and served several popes as a papal judge-delegate. He was on especially good terms with Pope Innocent III, in whose general reform of the clergy in Lombardy he played a major role. He participated in the Fourth Crusade and the establishment of the Latin Empire of Constantinople (1201–1205) and in the preaching of the next crusade in Lombardy (1208–1209).