William Marriott
William Marriott may refer to:
- William Marriott , engineer and locomotive superintendent
- William Marriott , baseball player, 1917–1927
- William Marriott , British magician and psychic debunker
- William Thackeray Marriott, MP
- William Hammond Marriott, American politician in the Maryland House of Delegates
- William Marriott , English cricketer
- Bill Marriott , English footballer