- Mark the Dwarf
- Marked Beauty
- Marked by the Wolf
- Marked In Flesh
- Marlene's new Monster
- Marquée
- Mars Descending: The Fall and Decline of the Human Male
- Martin Wallace
- Marvin Clark — In Search of Freedom
- Mary Lamb A Tangled Web
- Mary Lou's Brew
- Mary Murnó y el Fantasmario
- The Power of the Storyteller- A Collection of Short Stories
- Masque
- Masque de fer
- Masquerade Season
- Master (Drac Ula Book 3)
- Master and Apprentice
- Master of None
- Master Of The Order: Tales From The Renge: The Prophecy, Book 9
- Master of the Revels
- Master of Uncertainty
- Masters in This Hall
- Masters Of The Sun
- Masturbation Island
- Matar a mamá / Matricide
- Matchbox Girls
- Matcher Rules
- Matchmaker
- Math City
- Mathilda, SuperWitch
- Matizes da Noite
- Matriarch
- Matt Forbeck's Brave New World: Resolution
- Matt Forbeck's Brave New World: Revelation
- Matt Forbeck's Brave New World: Revolution
- Mattropolis: The Epic Novella
- Maturely Erotic
- Maven Fairy Godmother: Through the Veil
- Maven's Fractured Fairy Tales
- Max Dedge in The Time of The Uniborg
- Max Is Not A Fish
- Maybe's Baby: Uncommon Synths
- Mayhem and Magic
- Mayhem: A Dragon Wars Novella: Novella III
- Maze Demon
- Mazes & Labyrinths: A Collected Uncollected Anthology
- McGonigal's Worm
- McGrath 1 - Magische Ermittlungen aller Art
- McGrath 2: Thanatos
- Me gusta el Sol
- Me Was Da Bad Guy
- Me, a Genius? I Was Reborn into Another World and I Think They've Got the Wrong Idea! Volume 1
- Me, a Genius? I Was Reborn into Another World and I Think They've Got the Wrong Idea! Volume 2
- Me, a Genius? I Was Reborn into Another World and I Think They've Got the Wrong Idea! Volume 3
- Mechanical Dragons Box Set
- Medium in the Middle
- Medium Rare: Dead Man Talking
- Medusa
- Medusa: The Awakening
- Meeresschatten
- Meeting with My Maker
- Meetings with Death
- Megan en el Carnaval
- Megan en Navidad
- Megan no Carnaval
- Megan op het Carnaval
- Megan's Father Falls Ill
- Megan's Kerstmis
- Megan's Mark
- Melanie's Diary
- Melokai
- Meltworld Shanghai
- Memoirs of a Guardian Angel
- Memoirs of a Superior
- Memoirs of an Imaginary Friend
- Memories of the Flying Ball Bike Shop
- Memortality
- Memory and Dream
- Memory Game
- Men and Beasts
- Men of the Otherworld
- Mend The Flesh
- Mennengs
- Menopausal Fairy Mischief
- Mercenaires, larmes divines et ex-petites amies rancunières
- Mercenary
- Mercurion
- Mercury Retrograde
- Mercy Blade
- Mercy for the Damned
- Mercy for the Fallen
- Mercy's Sunset
- Mergeworld 1
- Merlin's Chosen Book 1 Rise of the Wyvern
- Merlin's Chosen Book 2 Dragon's War, Love's Battle
- Merlin's Chosen Book 3 Final Stand
- Merlin's Chosen Book 4 Children of the Chosen
- Merlin's Chosen Book 5 Risleigh's Return
- Merlin's Chosen Book 6 Behind The Glass
- Merlin's Chosen Book 7 From the Shadows
- Merlin's Chosen Book 8 Programmed
- Merlin's Knot
- Merlin's Magic Wang
- Merlin's Rings
- Merlin's Weft
- Merlyn's Mind
- Mermaid Rising
- Mermaid's Song
- Merry WitchMas
- Merula
- Mesmerized
- Message from the Great Rainbow
- Message in a Bottle
- Messages
- Messages from the Sun: Encounters in Elsewhen
- Messaggero Del Tempo