Authors
- Mercedes Lackey
- Gabriela Romero Lacruz
- Mur Lafferty
- Fabio Laguna
- Kim Laidlaw
- Lillie Lainoff
- Sam Lake
- Susanne Lambdin
- Kyle Lambert
- Margo Lanagan
- Jess Landry
- Joel Lane
- Andrew Lane
- John Langan
- Sarah Langan
- Richard Lange
- John Lange
- David Langford
- Oliver K. Langmead
- Ruth Langmore
- Graham Langridge
- Kasey Lansdale
- Joe R. Lansdale
- Tim Lapetino
- Alice LaPlante
- Tanya Lapointe
- Eric LaRocca
- Abigail Larson
- Jesse Lasky
- Mark A. Latham
- Katie Lattari
- James Lawrence
- Jim Lawrence
- Stephen Laws
- John Lawton
- Thang Le
- Tim Lebbon
- Arone Le Bray
- Phil Lecomber
- Stacey Lee
- Jim Lee
- Stan Lee
- Tony Lee
- Ang Lee
- Sharon Lee
- Victoria Lee
- C.J. Leede
- Scott Leeds
- Lúthien Leerghast
- Dennis Lehane
- Susan Lehman
- Steve Leialoha
- Stephen Leigh
- Richard Lemmer
- Barbra Leslie
- V. H. Leslie
- Jonathan Lethem
- David D. Levine
- David Levy
- Roger Levy
- Kate Lewis
- D. F. Lewis
- Steve Lieber
- Tony Liebhard
- Brian Lillie
- Evangeline Lilly
- Roselle Lim
- Judy I. Lin
- Damon Lindelof
- Maureen Lindley
- Kelly Link
- Laura Lipmman
- David Liss
- Lukasz Liszko
- Toby Litt
- Darcie Little Badger
- Alison Littlewood
- Ken Liu
- Marjorie Liu
- Livia Llewellyn
- Malinda Lo
- Wayne Lo
- M. K. Lobb
- Katherine Locke
- Morgan Lockhart
- Steve Lockley
- Inverna Lockpez
- Kirsty Logan
- John Logan
- Paul Brad Logan
- Alex London
- H. M. Long
- Andrew Loomis
- Solano Lopez
- Marina J. Lostetter
- Randall Lotowycz
- H.P. Lovecraft
- Charles Lovecraft
- James Lovegrove
- Peter Lovesey
- Phil Lovesey
- George Lucas
- Tim Lucas
- Lucasfilm
- Rory Lucey
- José Luis García-López
- Lulumineuse
- Brian Lumley
- Andy Lunique
- Richard Lupoff
- Lisa Lutz
- Scott Lynch
- Tom Lynch
- Gayle Lynds
- Christine Lynn Herman