John Frederick Clute (born 12 September 1940) is a Canadian-born author and critic specializing in science fiction and fantasy literature who has lived in both England and the United States since 1969. He has been described as "an integral part of science fiction's history" and "perhaps the foremost reader-critic of sf in our time, and one of the best the genre has ever known." He was one of eight people who founded the English magazine Interzone in 1982 (the others included Malcolm Edwards, Colin Greenland, Roz Kaveney, and David Pringle).