William Hardy may refer to:
Billy Hardy (boxer) (born 1964), English bantamweight and featherweight boxer Billy Hardy (footballer) (1891–1981), English footballer W. G. Hardy (1895–1979), Canadian professor, writer, ice hockey administrator William Hardy (actor) (1933–2008), American actor and theatre director William Hardy (archivist) (1807–1887), British archivist and Deputy Keeper of the Public Record Office William Hardy (Australian politician) (fl. 1861), member of the New South Wales Legislative Council William Bate Hardy (1864–1934), British biologist William H. Hardy (1837–1917), American founder of Hattiesburg William Henry Hardy (1831–?), Democratic politician Willie Hardy (1922–2007), Democratic politician William John Hardy (1857–1919), English archivist and antiquarian William Le Hardy (1889–1961), English archivist Will Hardy (born 1988), American National Basketball Association Coach
See also William Hardie (disambiguation)