Jonathan Simon Christopher Riley-Smith, K.St.J., Ph.D. MA, Litt.D., FRHistS (born 27 June 1938) is an historian of the Crusades,[1] and a former Dixie Professor of Ecclesiastical History. He is a Fellow of Emmanuel College, Cambridge.
He was educated at Eton College and Trinity College, Cambridge, where he took his BA (1960), MA (1964), PhD (1964), and LittD (2001).
During his career, he has taught at the University of St Andrews, Queens' College, Cambridge, Royal Holloway College, London as well as at Trinity College.
He was a founder of the Society for the Study of the Crusades and the Latin East. He is also a Knight of Grace and Devotion, Sovereign Military Order of Malta and a Knight of Justice, Most Venerable Order of the Hospital of Saint John of Jerusalem.