• Vassal, Jacques (1976). Electric children : roots and branches of modern folkrock. Translated and adapted by Paul Barnett. New York: Taplinger. ISBN 9780800823825.
• Planet Earth: An Encyclopedia of Geology, 1977, as Paul Barnett (co-editor with Anthony Hallam & Peter Hutchinson)
• Aries I, 1979, edited as John Grant
• Phaidon Concise Encyclopedia of Science & Technology, 1979, as Paul Barnett, edited by John-David Yule (Contributing Editor)
• The Book of Time, 1980, as John Grant (co-editor with Colin Wilson)
• A Directory of Discarded Ideas, Ashgrove Press 1981, as John Grant
• The Directory of Possibilities, 1981, as John Grant (co-editor with Colin Wilson)
• A Book of Numbers, 1982, as John Grant
• Dreamers: A Geography of Dreamland Ashgrove Press 1983
• The Truth About the Flaming Ghoulies, 1983, as John Grant
• Sex Secrets of Ancient Atlantis, 1986, as John Grant
• Encyclopedia of Walt Disney's Animated Characters, Harper & Row 1987, as John Grant. ISBN 978-0-06-015777-7 (first edition)
• Earthdoom! 1987, as John Grant with David Langford
• The Advanced Trivia Quiz Book, 1987, as John Grant
• Great Mysteries, 1988, as John Grant
• An Introduction to Viking Mythology, 1989, as John Grant
• The Great Unsolved Mysteries of Science, 1989, as John Grant
• Eclipse of the Kai, 1989, as John Grant with Joe Dever
• The Dark Door Opens, 1989, as John Grant with Joe Dever
• The Sword of the Sun, 1989, as John Grant with Joe Dever
• Hunting Wolf, 1990, as John Grant with Joe Dever
• Albion, 1991, as John Grant
• Unexplained Mysteries of the World, 1991, as John Grant
• The Claws of Helgedad, 1991, as John Grant with Joe Dever
• The Sacrifice of Ruanon, 1991, as John Grant with Joe Dever
• The World, 1992, as John Grant
• Monsters, 1992, as John Grant, US title: Monster Mysteries
• The Birthplace, 1992, as John Grant with Joe Dever
• The Book of the Magnakai, 1992, as John Grant with Joe Dever
• Legends of Lone Wolf Omnibus, 1992 as John Grant with Joe Dever
• The Encyclopedia of Science Fiction, 1993 (second edition), edited by John Clute and Peter Nicholls, John Grant technical editor
• Encyclopedia of Walt Disney's Animated Characters 1993 (second edition), as John Grant
• The Tellings, 1993, as John Grant with Joe Dever
• The Lorestone of Varetta, 1993, as John Grant with Joe Dever
• History Book, A Thog the Mighty Text (chapbook), 1994, as John Grant
• The Secret of Kazan-Oud, 1994, as John Grant with Joe Dever
• The Rotting Land, 1994, as John Grant with Joe Dever
• The Hundredfold Problem, 1994, as John Grant
• Dr Jekyll & Mr Hyde, 1995, as John Grant (children's retelling)
• The Encyclopedia of Fantasy and Science Fiction Art Techniques, 1996, as John Grant with Ron Tiner
• The Encyclopedia of Fantasy. edited by John Clute and John Grant, New York: St. Martin's Press, 1997. ISBN 0-312-15897-1.
• Strider's Galaxy, [Legend] 1997, as Paul Barnett
• Frankenstein, 1997, as John Grant (children's retelling)
• Strider's Universe, [Orbit] 1998, as Paul Barnett
• Encyclopedia of Walt Disney's Animated Characters, 1998 (third edition), as John Grant
• Enchanted World: The Art of Anne Sudworth, 2000, as John Grant
• Guts, 2001, as John Grant with David Langford
• Masters of Animation, 2001, as John Grant
• The World, 2001, as John Grant (re-issue)
• Albion, 2001, as John Grant (re-issue)
• The Paper Tiger Fantasy Art Gallery, 2002, as Paul Barnett
• Perceptualistics: The Art of Jael, 2002, as John Grant
• Dragonhenge, 2002, as John Grant with Bob Eggleton
• The Far Enough Window, 2002, as John Grant
• Qinmeartha and the Girl-Child LoChi, 2002, as John Grant, part of double book with The Tomb of the Old Ones by Colin Wilson
• The Chesley Awards For Science Fiction & Fantasy Art: A Retrospective, 2003, as John Grant with Elizabeth Humphrey and Pamela D. Scoville. ISBN 978-1-904332-10-7
• The Hundredfold Problem, 2003, as John Grant (re-issue)
• Earthdoom! 2003, as John Grant with David Langford (re-issue)
• Strange Pleasures 2, 2003, edited as John Grant with Dave Hutchinson
• Take No Prisoners, 2004, as John Grant; story collection
• Digital Art For the 21st Century, 2004, edited as John Grant with Audre Vysniauskas
• The Stardragons, 2005 as John Grant with Bob Eggleton
• Sci-Fi Movies, AAPPL 2006, as John Grant
• Noir Movies, AAPPL 2006, as John Grant
• Life-Size Dragons, 2006, as John Grant with Fred Gambino
• Animated Movies, AAPPL 2006, as John Grant
• Discarded Science: Ideas That Seemed Good at the Time..., Facts, Figures & Fun, 2006 ISBN 978-1-904332-49-7
• Beer, AAPPL, 2006, as Paul Barnett
• New Writings in the Fantastic, 2007, edited as John Grant
• Corrupted Science: Fraud, Ideology and Politics in Science, Facts, Figures & Fun, 2007 ISBN 978-1-904332-73-2
• The Dragons of Manhattan, 2008, as John Grant
• Leaving Fortusa, 2008, as John Grant
• The City In These Pages, PS Publishing, 2008, as John Grant
• Bogus Science: Or, Some People Really Believe These Things, Facts, Figures & Fun, 2009, ISBN 978-1-904332-87-9
• Denying Science: Conspiracy Theories, Media Distortions, and the War Against Reality, Prometheus Books, 2011, as John Grant
• Warm Words and Otherwise: A Blizzard of Book Reviews, Infinity Plus Books, 2011, as John Grant
• Legends of Lone Wolf Omnibus 1, Dark Quest Books, 2011, as John Grant with Joe Dever
• The Lonely Hunter, PS Publishing, 2012, as John Grant
• Earthdoom!, Dark Quest Books, 2012, as John Grant with David Langford (re-issue)
• A Comprehensive Encyclopedia of Film Noir: The Essential Reference Guide, Applause Theatre & Cinema Books, 2013, as John Grant
• Tell No Lies, Alchemy Press, 2014, as John Grant; story collection
• Debunk It!: How to Stay Sane in a World of Disinformation, Zest, 2014, as John Grant; reprinted as Bullsh*t, MJF Books, 2014, as John Grant
• Spooky Science: Debunking the Pseudoscience of the Afterlife, Sterling, 2015, as John Grant
• Eureka!: 50 Scientists who Shaped Human History, Zest, 2016, as John Grant
• Corrupted Science: Fraud, Ideology and Politics in Science (revised & expanded), See Sharp Press, 2017, as John Grant

Critical studies and reviews of Grant's work

Enchanted world

• De Lint, Charles (January 2001). "Books to Look For". F&SF. 100 (1): 24–28.

• Official website
• Addenda to the Encyclopedia of Fantasy
• Profile at Infinity Plus including updated entry from EoF
• John Grant at the Internet Speculative Fiction Database
• John Grant at the Encyclopedia of Science Fiction
• John Grant at the Encyclopedia of Fantasy