Authors
- Pablo Hidalgo
- John Higgins
- Sarah Hilary
- M.T. Hill
- Russell Hill
- Joe Hill
- James Hilton
- Jim C. Hines
- Bryan Hitch
- Mark Hodder
- Brian Hodge
- Craig Hodgetts
- William Hope Hodgson
- Mary Hoffman
- Burne Hogarth
- Jim Holdaway
- Nancy Holder
- Jesse J. Holland
- Richard Holliss
- Tetsuya Honda
- Yaroslav Horak
- Cole Horton
- Kyle Hotz
- Jason M. Hough
- Dan Houser
- Kat Howard
- Zach Howard
- Paul Howes
- Hugh Howey
- Bryan Howie
- Rachel Howzell Hall
- Sam Hudecki
- Noela Hueso
- Tanya Huff
- Rian Hughes
- David Hughes
- Matthew Hughes
- Charlie Human
- Christian Humberg
- E. Howard Hunt
- Kameron Hurley
- Matt Hurwitz
- Christopher Husberg
- Jacky Ickx
- Debra Jo Immergut
- Simon Ings
- Justina Ireland
- Alex Irvine
- John Jackson Miller
- S. Jae-Jones
- Jaime
- John Jakes
- Maxim Jakubowski
- Lynne Jamneck
- Klaus Janson
- Nicole Jarvis
- Jac Jemc
- N. K. Jemisin
- Maureen Jennings
- Louise Jensen
- Simon Jimenez
- Jock
- Stuart Johnson
- Staz Johnson
- Paul Johnson
- Mike Johnson
- Jean Johnson
- William Johnson
- Antony Johnston
- Carole Johnstone
- Mark Howard Jones
- Stephen Jones
- Tyler Jones
- Tim Jones
- Gwyneth Jones
- Stephen Graham Jones
- Sydney Jordan
- S. T. Joshi
- Phil Jourdan
- William Joyce
- Jr
- Richard Kadrey
- Paul Kane
- Drew Karpyshyn
- Kirsten Kaschock
- Heather Kassner
- Alma Katsu
- David Kaufman
- Nicholas Kaufmann
- Paul Kearney
- Day Keene
- Brian Keene
- Keffy R. M. Kehrli
- David H. Keller, M.D.
- James Patrick Kelly
- Gary Kemble
- Paul S. Kemp
- Cam Kennedy
- Steven L Kent
- Mike Kenwood
- Madaug Kenyon
- Sherrilyn Kenyon
- Jake Kerr
- Scott Kester
- Greg Keyes
- Rajan Khanna
- Chip Kidd
- Caitlin R. Kiernan
- Nancy Kilpatrick
- Stephen King
- J. Robert King
- Laurie R King
- T. Kingfisher
- Jack Kirby
- Barry Kitson
- Michael Klastorin
- Neil Kleid
- Leslie S Klinger
- Leslie Klinger
- Richard Knaak
- Nicholas Knight
- Sam Knight
- Chris Knowles
- J. C. Koch
- Joseph Koenig
- David Koepp
- Kojima Productions
- Dean R Koontz
- Susan Korman
- Ted Kosmatka
- Mary Robinette Kowal
- David J. Kowalski
- Gene Kozicki
- Daniel Kraus
- Nancy Kress
- Eric Kripke
- Lukas Kristjanson
- Neil Krolicki
- Paul Kupperberg
- Michael Kurland
- Sergey Kuznetsov
- Nick Kyme
- Mercedes Lackey
- Mur Lafferty
- Fabio Laguna
- Sam Lake
- Margo Lanagan
- Andrew Lane
- John Langan
- Sarah Langan