William Hanley (1931–2012) was an American author, playwright, and screenwriter. William or Bill Hanley may also refer to: Bill Hanley (ice hockey) (1915–1990), Canadian ice hockey administrator Bill Hanley (rancher) (1861–1935), American pioneer and rancher in Oregon Bill Hanley (sound engineer) (born 1937), sound engineer at the Woodstock festival, 1969 William A. Hanley (1886–1966), American mechanical engineer