William Haines (disambiguation)

William Haines (1900–1973) was an American movie actor who later became a designer of furniture and interiors.

William Haines may also refer to:

• William Haines (artist) (1778–1848), English engraver and painter
• William Haines (Australian politician) (1810–1866), Australian politician
• William Haines (South Australian politician) (1831–1902), S.A. pioneer
• William T. Haines (1854–1919), Governor of Maine from 1913 to 1915
• William Wister Haines (1908–1989), American novelist
• Willie Haines (1900–1974), Portsmouth and Southampton footballer