William Hartley
William Hartley may refer to:
- William Hartley (martyr), English Roman Catholic priest and martyr
- William Hartley (politician), Australian politician
- William G. Hartley, American historian and author
- William [James Hartley], Canadian political figure in British Columbia
- William Leonard Hartley, Canadian insurance salesman and politician in British Columbia
- Sir [William Pickles Hartley], English jam manufacturer and philanthropist
- Bill Hartley (activist), Australian political activist
- Bill Hartley (athlete), English former athlete