John Frederick Clute (born 1940) is a Canadian born author and critic who has lived in Britain since 1969. He has been described as “an integral part of science fiction's history.”
Clute's articles on speculative fiction have appeared in various publications since the 1970s. He is a co-editor of The Encyclopedia of Science Fiction (with Peter Nicholls) and of The Encyclopedia of Fantasy (with John Grant), as well as The Illustrated Encyclopedia Of Science Fiction, all of which won Hugo Awards for Best Non-Fiction. Clute is also author of the critical essay collections Strokes, Look at the Evidence, and Scores. His 1999 novel Appleseed, a space opera, was noted for its “combination of ideational fecundity and combustible language” and was selected as a New York Times Notable Book for 2002. In 2006, Clute published the essay collection The Darkening Garden: A Short Lexicon of Horror.