Pietro Lanfranconi

Pietro Lanfranconi, O.S.A. (1596–1674) was a Roman Catholic prelate who served as Bishop of Terni (1667–1674).

He was born in Ancona, Italy on 22 January 1596 and ordained a priest in the Order of Saint Augustine. On 3 August 1667, he was appointed during the papacy of Pope Clement IX as Bishop of Terni. On 21 August 1667, he was consecrated bishop by Giannicolò Conti, Cardinal-Priest of Santa Maria in Traspontina, with Giacomo de Angelis, Archbishop Emeritus of Urbino, Mario Fani, Titular Bishop of Cyrene, serving as co-consecrators. He served as Bishop of Terni until his death on 6 March 1674.

While bishop, he was the principal co-consecrator of Matteo Cosentino, Bishop of Anglona-Tursi (1667); and Alessandro Diotallevi, Bishop of Pesaro (1667).