William Hardy

William Hardy may refer to:


 * Billy Hardy (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