Pietro Cancellieri (also Pietro Cavalieri) (died 1580) was a Roman Catholic prelate who served as Bishop of Lipari (1571–1580).
[1] On 3 October 1571, Pietro Cancellieri was appointed during the papacy of Pope Pius V as Bishop of Lipari.
[1] On 7 October 1571, he was consecrated bishop by Scipione Rebiba, Cardinal-Priest of Santa Maria in Trastevere, with Umberto Locati, Bishop of Bagnoregio, Eustachio Locatelli, Bishop of Reggio Emilia, serving as co-consecrators.
[1] He served as Bishop of Lipari until his death in 1580.
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