| Type: | Bishop |
| Honorific-Prefix: | Most Reverend |
| Sebastiano Gentili | |
| Bishop of Terni | |
| Church: | Catholic Church |
| Diocese: | Diocese of Terni |
| Term: | 1656–1667 |
| Predecessor: | Francesco Angelo Rapaccioli |
| Successor: | Pietro Lanfranconi |
| Consecration: | 30 March 1642 |
| Consecrated By: | Alessandro Cesarini (iuniore) |
| Birth Date: | 1597 |
| Death Date: | 3 August 1667 (age 70) |
| Death Place: | Terni, Italy |
| Previous Post: | Bishop of Anagni (1642–1646) |
| Nationality: | Italian |
Sebastiano Gentili (1597 – 3 August 1667) was a Roman Catholic prelate who served as Bishop of Terni (1656–1667) and Bishop of Anagni (1642–1646).[1]
He was born in Foligno, Italy in 1597.[2] [3] On 24 March 1642, he was appointed during the papacy of Pope Urban VIII as Bishop of Anagni.On 30 March 1642, he was consecrated bishop by Alessandro Cesarini (iuniore), Cardinal-Deacon of Sant'Eustachio, with Giovanni Battista Altieri, Bishop Emeritus of Camerino, and Deodato Scaglia, Bishop of Melfi e Rapolla, serving as co-consecrators. On 3 December 1646, he resigned as Bishop of Anagni.