| Honorific-Prefix: | Most Reverend |
| Giovanni Marquet | |
| Bishop of Patti | |
| Church: | Catholic Church |
| Diocese: | Diocese of Patti |
| Term: | 1494–1499 |
| Predecessor: | Giacomo Antonio Leofanti |
| Successor: | Miguel Figueroa (bishop) |
| Death Date: | 1499 |
| Death Place: | Patti, Italy |
Giovanni Marquet (died 1499) was a Roman Catholic prelate who served as Bishop of Patti (1494–1499).[1]
Giovanni Marquet was ordained a priest in the Order of Preachers. On 16 June 1494, he was appointed by Pope Alexander VI as Bishop of Patti. He served as Bishop of Patti until his death in 1499.