François Louis Ganshof (14 March 1895, Bruges – 26 July 1980, Brussels) was a Belgian medievalist. After studies at the , he attended the University of Ghent, where he came under the influence of Henri Pirenne. After studies with Ferdinand Lot, he practiced law for a period, before returning to the University of Ghent. Here he succeeded Pirenne in 1930 as professor of medieval history, after Pirenne left the university as a result of the enforcement of Dutch as language of instruction. He remained there until his retirement in 1961.