William Garnett

• William Garnett (civil servant), British Inspector-general of Taxes
• William Garnett (politician), MP for Lancaster, 1857–1864
• William Garnett (photographer), American landscape photographer
• William Garnett (professor), British electrical engineer
• William John Garnett, British industrial relations campaigner
• Bill Garnett, American basketball player
• William Garnett (cricketer), English cricketer and clergyman