- M
- Macha ou l'évasion
- Machani Diplomat
- Machine Rebel
- Mackina
- Maddy's a Baddy
- Mahou no Sekai: World of Magic「魔法のセカイ」
- Making a Living
- Making Call of Duty Modern Warfare
- Malaikat Pelindung Gotik
- MALCOLM JAMESON Premium Collection – 17 Science Fiction Classics in One Volume
- Malia's Miracles
- Malice
- Mammoth Books presents Sleepover
- Mandy Lamb and the Full Moon (U.K. Edition)
- Mandy Lamb and the Full Moon (U.S. Edition)
- Many Waters
- Mapmaker
- Mara, per te
- Marca de nacimiento
- Marcados à nascença. Livro I
- Mardok and the Seven Exiles
- Maria-eksperimentet
- Mark In Pompeii
- Mark of Odin: The Awakening
- Mark of the Triad
- Marked
- Marked (The Birthright Book 2)
- Marked
- Marooned
- Marquer les ombres
- Marquer les ombres - Tome 2 - Dès 14 ans
- Marqués - Tome 2 : Lumière
- Mars Burning
- Mars Evacuees
- Mars One
- Mars Rising
- Marsch der Könige (Band 2 im Ring der Zauberei)
- Marsz Władców (Księga 2 Kręgu Czarnoksiężnika)
- Martian Wars: Captured (Episode 6)
- Martian Wars: Demise (Episode 8)
- Martian Wars: Escape Is Possible (Episode 2)
- Martian Wars: Europa Station (Episode 9)
- Martian Wars: Extreme Torture (Episode 12)
- Martian Wars: Flight From Mars (Episode 3)
- Martian Wars: Horror on Europa (Episode 10)
- Martian Wars: Invasion Plans (Episode 1)
- Martian Wars: Marie's Choice (Episode 7)
- Martian Wars: Prologue
- Martian Wars: Return To Mars (Episode 5)
- Martian Wars: Robot Attack (Episode 11)
- Martian Wars: The End (Episode 15)
- Martian Wars: True Allegiances (Episode 4)
- Martian Wars: Uprising (Episode 13)
- Martian Wars: Zypson Prepares (Episode 14)
- MARTians
- Mary & the Alien
- Marée
- Marşul Regilor (Cartea 2 Din Inelul Vrăjitorului)
- Masks of the Outcasts
- Mason
- Masque of the Red Death
- Masterminds: Criminal Destiny
- Masterminds: Payback
- Math Myths for the Modern Child
- Matilda Rescues the Robot
- Matt Archer: Bloodlines
- Matt Archer: Omnibus (Books 1-3)
- Matt Archer: Redemption
- Matt Archer: The Short Stories
- Matter of Resistance
- Mattia Melissa e il mistero del pozzo di Barumini
- Max and the Gatekeeper
- Max Booth Future Sleuth
- Max Nebulous
- Max und die Sache mit der Raumzeit-Faltungsinversion
- Max: A Watcher Series Mini Novella
- Maximum Experience
- Maximum Ride: Saving the World and Other Extreme Sports
- Maximum Ride: School's Out Forever
- Maximum Ride: The Angel Experiment
- Maxon
- May's Moon
- Maya of the Inbetween
- Mayfly
- Mayhem and Madness
- Maze Runner - Dødskuren
- Maze Runner - Udbruddet
- Me Ma Supial!
- Me vs. the Multiverse: Enough About Me
- Me vs. the Multiverse: Pleased to Meet Me
- Meant to Be
- Measure of Days
- MECH-X4 Junior Novel
- Mechanical
- Meer der Schilde (Band #10 im Ring der Zauberei)
- Meet me at Midnight / Moon Light Walker
- Meeting the Hero
- Mein Kater vom Mars - Her mit dem Stoff!
- Melissa y sus extraterrestres peludas
- Meme
- Memento
- Memoirs of the Forgotten
- Memorias de un ángel de papel
- Memories of Summer
- Menosaurus
- Mentes poderosas 1 - Mentes poderosas
- Mercury Boys
- Mercury Man
- Mercy, Me
- Mere end det
- Meridian
- Merlin's Shakespeare
- Merly
- Mesmerized
- Messaggi dallo Spazio (Le Cronache dell’invasione— Libro Uno)
- Metaltown
- Meteorite Strike
- Metropolis
- Meyruka. Die goldene Kriegerin
- Mi Robot Saves Energy
- Mi Robot Se Tira Pedos
- Michael Sanders
- Michael Vey
- Michael Vey 2
- Michael Vey 3