Rinaldo Orsini (died 6 June 1374) was an Italian prelate during the Avignon Papacy.
Born in the 1290s, he was a nephew of Cardinal Napoleone Orsini.
He was appointed to succeed his uncle as the cardinal deacon of Sant'Adriano al Foro by Pope Clement VI on 17 December 1350.
[1] He held nonresident ecclesiastical posts in Italy, Spain, the Low Countries and England, where he was the archdeacon of Leicester for three months in 1346–1347 and later dean of Salisbury.
[1][2] He died during an epidemic at Avignon.