William Hartley
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)