| Type: | Bishop |
| Honorific-Prefix: | Most Reverend |
| Pietro Antonio d'Alessandro | |
| Bishop of San Marco | |
| Church: | Catholic Church |
| Diocese: | Diocese of San Marco |
| Term: | 1688–1693 |
| Predecessor: | Antonio Papa |
| Successor: | Francesco Maria Federico Carafa |
| Ordination: | 8 March 1653 |
| Consecration: | 8 June 1688 |
| Consecrated By: | Galeazzo Marescotti |
| Birth Date: | 4 June 1628 |
| Death Date: | 28 September 1693 (age 65) |
| Death Place: | San Marco, Italy |
Pietro Antonio d'Alessandro (1628–1693) was a Roman Catholic prelate who served as Bishop of San Marco (1688–1693).[1] [2]
Pietro Antonio d'Alessandro was born in Zalatone, Italy on 4 June 1628 and ordained a priest on 8 March 1653.On 31 May 1688, he was appointed during the papacy of Pope Innocent XI as Bishop of San Marco.On 8 June 1688, he was consecrated bishop by Galeazzo Marescotti, Cardinal-Priest of Santi Quirico e Giulitta, with Pietro de Torres, Archbishop of Dubrovnik, and Pier Antonio Capobianco, Bishop Emeritus of Lacedonia, serving as co-consecrators. He served as Bishop of San Marco until his death on 28 September 1693.