William Hartley may refer to:
William Hartley (martyr) (1557–1588), English Roman Catholic priest and martyr William Hartley (politician) (1868–1950), Australian politician William G. Hartley (born 1942), American historian and author William James Hartley (born 1945), Canadian political figure in British Columbia William Leonard Hartley (1916–2003), Canadian insurance salesman and politician in British Columbia Sir William Pickles Hartley (1846–1922), English jam manufacturer and philanthropist Bill Hartley (activist) (1930–2006), Australian political activist Bill Hartley (athlete) (born 1950), English former athlete
See also Hartley (disambiguation)