William Haines (disambiguation)

William Haines may refer to:


 * William Haines (1900-1973) American movie actor who later became a designer of furniture and interiors
 * William Haines (artist)
 * William Haines (Australian politician) (1810–1866), Australian politician
 * William Haines (South Australian politician) (1831–1902), S.A. pioneer
 * William T. Haines, former governor of Maine
 * William Wister Haines, American novelist
 * Willie Haines (1900–1974), Portsmouth and Southampton footballer