Hewett is a surname. Notable people with the surname include:
William Nathan Wrighte Hewett (1834–1888), English Royal Navy admiral and Victoria Cross recipientBen Hewett (born 1978), Australian actor and television presenterColleen Hewett (born 1950), Australian actress and singerDave Hewett (born 1971), New Zealand rugby union playerHoward Hewett (born 1955), American singerAdrian Paul Hewett (born 1959), British actor, director, and philanthropistIvan Hewett, British music journalistLauren Hewett (born 1981), Australian actress