- M Issue 1
- M Issue 2
- M Issue 3
- M'Ganga's Curse
- M'rara
- M-E-D-S
- M.u.r.s.e. #1
- M34 (Flash Relatos)
- Ma femme est une sorcière
- Ma part d’ombre
- Mabini Shadows
- Macabre
- Macabre & Mystery Classics - Ultimate Collection
- Macabre Dairies
- Macabre Manila
- Macabre Memories: Eclectic Tales to Chill the Soul
- Macabre Moments
- Macabre Tales
- Mace Was Here: A Gay Zombie Romance Short
- Machetazos
- MachoPoni: A Prance with Death (Poniworld Chronicles #1)
- Macleod's Story Part Two
- Maculada Odete
- Macushla
- Mad Ink and Mistaken Identities
- Mad Men
- Mad Moon of Dreams
- MAD SEASON
- Mad Tales
- Mad World
- Madam Crowl's Ghost and The Dead Sexton
- Madame Chikolewa
- Madame Cruller's Couch and Other Dark and Bizarre Tales
- Madame Helena Blavatsky - Two Short Stories by One of the Greats of Occult Writing (Fantasy and Horr...
- Madame Vampire
- Maddrax 373
- Maddrax 403
- Maddrax 404
- Maddrax 405
- Maddrax 406
- Maddrax 407
- Maddrax 408
- Maddrax 409
- Maddrax 474
- Maddrax 475
- Maddrax 476
- Maddrax 477
- Maddrax 478
- Made In Babylon
- Made In Blood: Tales of Terror
- Made In Hell
- Made to Break
- Madeline
- Madhouse
- Madigan Mine
- Madness
- Madness And Truth
- Madness Burns
- Madness Under the Tracks
- Madonna 666
- Madre delle ossa
- Madre di sangue
- Madre Terrestre
- Madson
- Maego's Curse
- Maelstrom
- MAELSTROM
- Maelstrom: Edizione italiana
- Maestro di caccia. Licantropi Filantropi #2
- Maestros de la Prosa - Bram Stoker
- Maestros de la Prosa - Edgar Allan Poe
- Maestros de la Prosa - H. P. Lovecraft
- Magdalene
- Magia Do Brasil
- Magia Negra Sexual em Praga
- Magic Lantern Show of the Gods
- Magic Man Plus 15 Tales of Terror: A Collection of Horror Stories
- Magic Terror
- Maginot
- Magnified and Sanctified
- Magniverne
- Magnolia Charms
- Magnum Innominandum
- MAHLZEIT!
- Mail Order Massacres
- Mailboxes
- Maimed by the Alpha
- Mainstream
- Mais mortais que os homens
- Major Problems
- Make Believe
- Make Me A Corpse
- Makepeace and Grimes: The Last Watchman
- Makers
- Making Friends (and other fictions)
- Making Love
- Making Magic
- Making Monsters: A Speculative and Classical Anthology
- Making Room
- Making the Cut
- Mala Fide
- Malady - A Zombie Survival Story
- Malas Especies
- Male Antico
- Malebête
- Maledictions: A Horror Anthology
- Maleficio
- Maleficio (Flash Relatos)