- Maat-ka-re. Memoirs of a Time Traveler.
- Mach's Legacy
- Mach's Mission
- Machina Obscura
- Machina Utopia
- Machine Girl Book 1: Welcome to the Machine
- Machine Man
- Machines
- Machines and Men
- Machines of the Little People
- Mackina
- Made to Measure
- Madness from the Inconstant Moon
- Magellan
- Magicka Apocalyptica
- MagTech Suit Up
- Malfunction
- Malleus Terrarium. Хроника первая: Каллум
- Mammoth
- Mammuthus
- Man of Many Minds
- Manalone
- Mandated Happiness
- Maniacs: The Krittika Conflict
- Manifold: Origin
- Manifold: Space
- Manifold: Time
- Manshape
- Maps
- Marcellus: The Mantle
- MARiiMO
- Mariner Valley
- Mariner's Wake
- Marker Stone
- Market Forces
- Mars and Beyond
- Mars Born
- Mars is My Destination
- Mars Life
- Mars, Inc.
- MARS. The beginning of the way
- Mars; A Traveler's Guide
- Martian Divides
- Martian Terror and two more stories
- Marvelous Things
- Master of the Moondog
- MASTER PLAN
- Masters of Space
- Mate in Two Moves
- Materia non vitale
- Mathematics Of Eternity: Joe Ballen, Book One
- Maul
- Maxwell's Demons
- McGonigal’s Worm
- McIlvaine’s Star
- McLaughlin
- ME: A Novel of Self-Discovery
- Mech War For Humanity: The Galahad Initiative
- Medal of Honor
- Medusa's Children
- Meeting of the Minds
- MegaKiller Reloaded
- Megayear Future History
- Memento mori. Фантастические рассказы
- Memoirs of a Mad Scientist One: Solarpunk Outlaw
- Memoirs of a Timelord
- Memoirs of Asylum: Janet Blair
- Memory 2.0
- Memory Machine: Birthday Killings
- Memory Stick
- Men Like Gods
- MENACING OPPOSITION
- Menelaus
- Mercury
- Merimnae
- Merimnae: Inbound
- Merimnae: Outbound
- Message from Ceti-Alpha 6
- Message from the Genorantans
- Met Chron New-Humans (Metamorphosis Chronicles Book 2)
- Metal Powerhouse
- Metalheads & Meatheads
- Metallic Love
- Metamorph
- Metallic Love
- Metamorph
- Metamorphosis
- Methuin's Collapse
- Metro 2034
- Micah
- Micro Science Fiction
- Middle Distance
- Midnight Zone a Cade Rearden Thriller
- Midnight's Park
- Midworld
- Milay
- Miles - Unerwartet Held
- Miles - Ungewollt Held
- Milky Way Boogie
- Milky Way Tango
- Millenium
- Millenium. Пираты
- Million Dollar Puppeteers
- Milor!
- Mind Dimensions Omnibus
- Mind in the Clouds
- Mind Machines
- Mind Web
- Mindgate 1
- MindLink
- Mindset
- Mindweb
- Miners in the Sky
- Minerva
- Mining Games
- Miracle Cure
- Mirrors
- Misja specjalna. Część 2
- Missing Presumed Dead
- Mission
- Mission Blaue Sonne
- Mission Control: Lunar Quest
- Mission du dernier recours
- Mission Earth Volume 2: Black Genesis
- Mission Earth Volume 7: Voyage of Vengeance