Marco Giustiniani (1547–1640) was a Roman Catholic prelate who served as Roman Catholic Bishop of Chios (1604–1640).[1][2][3]
Marco Giustiniani was ordained a priest in the Order of Preachers.[1] On 31 May 1604, he was appointed during the papacy of Pope Gregory XIII as Bishop of Chios.[1] On 12 June 1604, he was consecrated bishop by Girolamo Bernerio, Cardinal-Bishop of Albano, with Agostino Quinzio, Bishop of Korčula, and Vincenzo Giustiniani, Bishop of Gravina di Puglia, serving as co-consecrators.[1] He served as Bishop of Chios until his death in 1640.[1]