- Moderan
- Modern Classic Short Novels Of Science Fiction
- Modern Day Bride
- Modern Love and other stories
- Modified Remnants
- Mods
- Moi l'indien – Partie 1 - Les enfants de l'an 2100
- Moi, mon double et ma moitié ?
- Moi, mon double et ma moitié ? - Tome I
- Moi, Sergeant
- Mojito Doomsday
- Moksha
- Molerat 2.0
- Moleste a Jack Barron
- Molly McNamara, Cyberadmiral
- Molten
- Molten Avatar
- Molten Coil
- MOM
- Momentary Stasis
- Monarch
- Monasphère
- Mondi Diversi
- Mondi senza tempo
- Mondo senza tempo
- MONDWELT
- Moneda (El Ciclo Barroco Vol. III)
- Money & Power
- Moneyline Secrets
- Mongrel
- Mongrel Trilogy
- Monique Orphan
- Monitor
- Monkey Man
- Monkey On His Back and eight more Stories
- Monkey Station: The Macaque Cycle, Book One
- Monolith's End
- Monozuki
- Monozuki
- Monsieur Jean des étoiles
- Monster
- Monster of Monsters #1 Part Seven: The Outsider, Chimera Rises
- Monster of the Dark
- Monster Stalker
- Monsters & Machinegeweren
- Monsters of the Apocalypse
- Monsters Win Wars: A Short Novel
- Monsters, and More
- Monsterseelen: Morgen seid ihr alle tot.
- Monstrocities
- Monstrocities 2: Dream Factory
- Monstrous Consequences
- Monstrous Planet
- Monte Vista Village
- Moon
- Moon Bride
- Moon Crazy
- Moon Daughter
- Moon Deeds: Star Children Saga
- Moon Flower
- Moon Life
- Moon Madness
- Moon of Danger
- Moon of Odysseus
- Moon Queen
- Moon Rebels
- Moon Rising
- Moon Rocks
- Moon Shadow
- Moon Trap
- Moon's Odyssey
- Moonbase: D.U.M.B.s (Deep Underground Military Bases) – Book 4
- Moonburn
- Mooncake
- Moondrive
- MoonDust
- MoonFall
- MoonFire
- Moonglow
- Moonkind
- Moonlight
- Moonlight & Mechanicals
- MoonRise
- Moons of New Saturn
- Moons of Solisticia
- Moons Rising
- Moonscape
- Moonshaker
- Moonsinger
- Moonsinger's Quest
- Mop-Head
- Moral and Orbital Decay
- Moral Compass To Be, or Not To Be
- Moral Compass To Be, or Not To Be
- Morale - A Story of the War of 1941-43
- Morango, L'altra faccia dei Lunatici
- Morbid Hearts
- Mordecai
- Mordiar's Hymn
- More Fantastic Stories
- More Real Than Him
- More than Human : Scifi Cyborg Romance
- More Than Stardust
- Moreta: Dragonlady of Pern
- Morgan's Misfits
- Morgengrauen: Ein postapokalyptischer Thriller
- Morgonstjärnan
- Morgue Ship
- Morlock Night
- Morning Star
- Morningside Fall
- MorningStar