Gerald Leslie Harriss FBA (22 May 1925 - 2 November 2014) was an English historian of the Late Middle Ages. His work focused on the parliamentary, financial and administrative history of the period. Harriss was a Fellow of Magdalen College, Oxford. In 1986, G. L. Harriss was elected a Fellow of the British Academy. Rulers and Ruled in Late Medieval England. Essays presented to Gerald Harriss (Hambledon, 1995), a Festschrift in his honour, edited by two of his former research students, Rowena E. Archer and Simon Walker, was published in 1995.