Berard of Castagna (c. 1172 – 8 September 1252) was a prelate and diplomat of the Kingdom of Sicily, who served as the archbishop of Bari (1207–1213) and archbishop of Palermo (1213–1252). Throughout his career he was a close ally of King Frederick II, who was also Holy Roman Emperor after 1220. He played a prominent role in the Sixth Crusade, both in the diplomatic preliminaries and in Frederick's visit to Jerusalem.