William Fyfe

William Fyfe may refer to:


 * William Fyfe (boatbuilder) (1785–1865), Scottish founder of the Fife & Sons shipyard, grandfather of William Fife
 * William Baxter Collier Fyfe (1836–1882), Scottish painter
 * William Hamilton Fyfe (1878–1965), British–Canadian scholar
 * William Fyfe (geochemist) (1927–2013), New Zealand geologist
 * William Patrick Fyfe (born 1955), Canadian serial killer