William Dunlop may refer to: William Dunlop (ecclesiastical historian) (1692–1720), British professor of church history at the University of Edinburgh William Dunlop (motorcycle racer) (1985–2018), British motorcycle racer William Dunlop (principal) (1654–1700), Covenanter and principal of Glasgow University William James Dunlop (1881–1960), Ontario MPP and cabinet minister William "Tiger" Dunlop (1792–1848), Member of Parliament for United Province of Canada and Warden of the Forests, Canada Company William Patterson Dunlop (1951–2009), Canadian actor William Vincent "Billy" Dunlop, convicted murderer who was the first person to be convicted under the new UK double jeopardy laws