| Type: | Bishop |
| Honorific-Prefix: | Most Reverend |
| Pietro Martire Giustiniani | |
| Archbishop (Personal Title) of Tinos | |
| Church: | Catholic Church |
| Diocese: | Diocese of Tinos |
| Term: | 1700–1715 |
| Predecessor: | Angelus Veniero |
| Successor: | Nicolaus Cigala |
| Consecration: | 13 January 1692 |
| Consecrated By: | Galeazzo Marescotti |
| Birth Date: | 1645 |
| Birth Place: | Chios, Greece |
| Death Date: | January 1715 (age 70) |
| Death Place: | Tinos, Greece |
Pietro Martire Giustiniani, O.P. (1645–1715) was a Roman Catholic prelate who served as Archbishop (Personal Title) of Tinos (1700–1715) and Archbishop of Naxos (1691–1700).[1]
Pietro Martire Giustiniani was born in Chios, Greece in 1645 and ordained a priest in the Order of Preachers.[2] [3] On 10 December 1691, he was appointed during the papacy of Pope Innocent XII as Archbishop (Personal Title) of Tinos.On 13 January 1692, he was consecrated bishop by Galeazzo Marescotti, Cardinal-Priest of Santi Quirico e Giulitta, with Giuseppe Bologna, Archbishop of Capua, and Stefano Giuseppe Menatti, Titular Bishop of Cyrene, serving as co-consecrators. On 10 May 1700, he was appointed during the papacy of Pope Innocent XII as Bishop of Tinos.He served as Bishop of Tinos until his death in January 1715.