Authors
- Donald Hamilton
- Edmond Hamilton
- Frank Hampson
- Elizabeth Hand
- Scott Handcock
- Rich Handley
- Edward B. Hanna
- James R. Hansen
- Jimmy Hansen
- Don Harley
- John Harris
- Joanne Harris
- Johnny Hart
- Andy Hartnell
- Aaron Harvey
- John Harvey
- Antoinette Haselhorst
- Dean Haspiel
- Henry Hasse
- Christopher Hastings
- Matt Hatton
- Joan He
- Maria Dahvana Headley
- Marcus Hearn
- Lisa Heathfield
- Michael Heatley
- Drew Heatley
- Alan Hebden
- Heidi Heilig
- Robert Heinlein
- John G. Hemry
- Alice Henderson
- Douglas Henderson
- Randy Henderson
- Lauren Henderson
- Grady Hendrix
- Darryl Henley
- Caroline Hennessy
- Christina Henry
- Brian Herbert
- Anthony Hern
- Mario Hernandez
- Gilbert Hernandez
- Jaime Hernandez
- Karen Heuler
- Jamie Hewlett
- Spencer Hickman
- Stephen Hickman
- Pablo Hidalgo
- John Higgins
- Tomás Hijo
- Sarah Hilary
- Russell Hill
- M.T. Hill
- Joe Hill
- James Hilton
- Jim C. Hines
- Bryan Hitch
- Mark Hodder
- Brian Hodge
- Craig Hodgetts
- William Hope Hodgson
- Mary Hoffman
- Burne Hogarth
- Stark Holborn
- Jim Holdaway
- Nancy Holder
- Jesse J. Holland
- Richard Holliss
- Tetsuya Honda
- Yaroslav Horak
- Cole Horton
- Kyle Hotz
- Jason M. Hough
- Dan Houser
- Zach Howard
- Kat Howard
- Paul Howes
- Hugh Howey
- Bryan Howie
- Rachel Howzell Hall
- Polly Ho-Yen
- Sam Hudecki
- Noela Hueso
- Tanya Huff
- Rian Hughes
- Matthew Hughes
- David Hughes
- Charlie Human
- Christian Humberg
- E. Howard Hunt
- Kameron Hurley
- Matt Hurwitz
- Christopher Husberg
- Jacky Ickx
- Debra Jo Immergut
- Simon Ings
- Justina Ireland
- Allison Irons
- Alex Irvine
- John Jackson Miller
- S. Jae-Jones
- Jaime
- John Jakes
- Maxim Jakubowski
- Harlan James
- Lynne Jamneck
- Klaus Janson
- Nicole Jarvis
- Jac Jemc
- N. K. Jemisin
- Maureen Jennings
- Louise Jensen
- Danian Jerry
- Simon Jimenez
- Jock
- Mike Johnson
- Joshua Phillip Johnson
- Staz Johnson
- Paul Johnson
- William Johnson
- Stuart Johnson
- Jean Johnson
- Antony Johnston
- Carole Johnstone
- Gwyneth Jones
- Mark Howard Jones
- Tyler Jones
- Stephen Graham Jones
- Tim Jones
- Stephen Jones
- Sydney Jordan
- S. T. Joshi
- Phil Jourdan
- William Joyce
- Jr
- Richard Kadrey
- Paul Kane
- Rumi Kaneko
- Drew Karpyshyn
- Kirsten Kaschock
- Heather Kassner
- Alma Katsu
- David Kaufman
- Nicholas Kaufmann
- Paul Kearney
- Brian Keene
- Day Keene
- Keffy R. M. Kehrli
- David H. Keller, M.D.