Ascenzio Guerrieri (died 1645) was a Roman Catholic prelate who served as Bishop of Castellaneta (1635–1645). (in Latin)"Diocese of Castellaneta" Catholic-Hierarchy.org. David M. Cheney. Retrieved October 7, 2016"Diocese of Castellaneta" GCatholic.org. Gabriel Chow. Retrieved October 7, 2016

Biography On 7 May 1635, Ascenzio Guerrieri was appointed during the papacy of Pope Urban VIII as Bishop of Castellaneta. On 13 May 1635, he was consecrated bishop by Francesco Maria Brancaccio, Cardinal-Priest of Santi XII Apostoli, with Giacomo Theodoli, Bishop of Forlì and Alessandro Suardi, Bishop of Lucera, serving as co-consecrators. He served as Bishop of Castellaneta until his death in 1645.

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