Byatt is a surname. Notable people with the surname include:
A. S. Byatt, DBE (born 1936), English novelist, poet and Booker Prize winnerAndy Byatt, English wildlife documentary film producer for the BBC Natural History Unit (NHU) in BristolDennis Byatt (born 1958), English former football central defender born in HillingdonHorace Byatt (1875–1933), British colonial governorSharon Byatt, British based actress born in Liverpool, who played Irenee in Carla Lane's Bread