| Honorific-Prefix: | Most Reverend |
| Pietro Magri | |
| Bishop of Policastro | |
| Church: | Catholic Church |
| Diocese: | Diocese of Policastro |
| Term: | 1635–1651 |
| Predecessor: | Urbano Felicio |
| Successor: | Filippo Jacobio |
| Consecration: | 7 October 1635 |
| Consecrated By: | Francesco Maria Brancaccio |
| Death Date: | October 1651 |
| Death Place: | Policastro, Italy |
Pietro Magri (died October 1651) was a Roman Catholic prelate who served as Bishop of Policastro (1635–1651).
On 1 October 1635, Pietro Magri was appointed by Pope Urban VIII as Bishop of Policastro. On 7 October 1635, he was consecrated bishop by Francesco Maria Brancaccio, Cardinal-Priest of Santi XII Apostoli, with Giovanni Battista Altieri, Bishop Emeritus of Camerino, and Sigismondo Taddei, Bishop of Bitetto, serving as co-consecrators. He served as Bishop of Policastro until his death in October 1651.