John Hewitt may refer to: John Hewitt (priest) (died 1588), English Roman Catholic priest and Catholic martyr, beatified in 1929. John Hewitt (antiquary) (1807–1878), English official. John Hill Hewitt (1801–1890), newspaper editor. John Napoleon Brinton Hewitt (1859–1937), linguist. John Hewitt (herpetologist) (1880–1961), South African zoologist and archaeologist. John Haskell Hewitt (1835–1920), American classical scholar and educator. John Hewitt (poet) (1907–1987), poet from Northern Ireland. John Hewitt (entrepreneur) (born 1949), U.S. entrepreneur. John Hewitt (footballer) (born 1963), Scottish former footballer and manager. John Hewitt (pentathlete) (born 1925), British Olympic pentathlete. John Hewitt, author of the Ringworld role-playing game. John K. Hewitt (born 1952), behavioral geneticist from Hampshire, England. John Marshall Hewitt (1841–1888), member of the Arkansas House of Representatives.