Sebastiano Perissi (1631 – November 1701) was a Roman Catholic prelate who served as Bishop of Grosseto (1700–1701) and Bishop of Nocera de' Pagani (1692–1700).^[3]

Sebastiano Perissi was born in Boccheggiano, Italy in 1631, but raised in Siena.^[1][2][4] Perissi obtained the degree of Doctor in utroque iure in Siena. He was Auditor in the nunciature in Florence, and then Vicar General of Naples. On 9 January 1692, he was appointed during the papacy of Pope Innocent XII as Bishop of Nocera de' Pagani.^[3][4] On 20 January 1692, he was consecrated bishop by Bandino Panciatici, Cardinal-Priest of San Pancrazio, with Giuseppe de Lazzara, Bishop of Alife, and Giuseppe Felice Barlacci, Bishop Emeritus of Narni, serving as co-consecrators.^[4] On 28 May 1700, he was appointed during the papacy of Pope Innocent XII as Bishop of Grosseto.^[3][4] He served as Bishop of Grosseto until his death in November 1701.^[4]

While bishop, he was the principal co-consecrator of:^[4]

• Giovanni Stefano Pastori, Bishop of Ventimiglia (1695);
• Vincenzo della Marra, Bishop of Alessano (1695);
• Daniele Scoppa, Bishop of Nola (1695).

• Cheney, David M. "Diocese of Grosseto". Catholic-Hierarchy.org. Retrieved January 4, 2019. (for Chronology of Bishops) ^{[self-published]}
• Chow, Gabriel. "Diocese of Grosseto (Italy)". GCatholic.org. Retrieved January 4, 2019. (for Chronology of Bishops) ^{[self-published]}
• Cheney, David M. "Diocese of Nocera Inferiore-Sarno". Catholic-Hierarchy.org. Retrieved June 16, 2018. (for Chronology of Bishops) ^{[self-published]}
• Chow, Gabriel. "Diocese of Nocera Inferiore-Sarno (Italy)". GCatholic.org. Retrieved June 16, 2018. (for Chronology of Bishops) ^{[self-published]}