William Marriott

• William Marriott (engineer), engineer and locomotive superintendent
• William Marriott (baseball), 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 (cricketer), English cricketer
• Bill Marriott (footballer), English footballer