- Manuja - Das verschwundene Wissen
- Manuscript Tradition
- Manuscrito hallado en una botella de Edgar Allan Poe (Guía de lectura)
- Manxome Foe
- Many Dimensions
- Maori
- Mapas en un espejo / Fabulas y fantasías (Mapas en un espejo 3)
- Maps of Broken Places
- Maradj életben!
- Maranta
- Marathon on Mons
- Marauder
- Marblehead
- Marc Deveroux: The Beginning
- March In Country
- March of the Cogsmen
- March to the Sea
- March to the Stars
- March Upcountry
- Marching Through Peachtree
- Marco's Tooth
- Marcus 582
- Marea estelar
- Marea tossica
- Marea tóxica
- Mareas de Medianoche (Malaz: El Libro de los Caídos 5)
- Mareridt på Mars
- Marfa
- Margaret and I
- Margaret und ich
- Marguay Menace
- Marianne, the Madame, and the Momentary Gods
- Marianne, the Magus and the Manticore
- Marianne, the Matchbox, and the Malachite Mouse
- Marie
- Marilyn et l'ange turfiste
- Marine
- Marine Summer: Year 2041
- Mariner Valley
- Marinopolis
- Marion Zimmer Bradley Super Pack
- Marion's Wall
- Marionetas de la sombra (Saga de la Sombra de Ender 3)
- Mariposa (2173)
- Mark of the Star People
- Mark Porter of Argoron
- Mark Storm - 2
- Mark Storm - 5 : L'ombre de la rose noire
- Marked Chaos
- Marked For The Alien Prince - Trilogy
- Marked Prince
- Marker
- Markers: Book 2
- Market Forces
- Marks of Power
- Markswoman
- Markus av Trolyrien
- Marley’s Chain
- Marlowe Kana (Volume 2)
- Marlowe Kana (Volume 3)
- Marlowe Kana (Volume 4)
- Marooned : An Asian Alternate-History Science Fiction Saga
- Marooned in Realtime
- Marque and Reprisal
- Marque of Caine
- Marradith, Darkly: A Marradith Ryder Series Novella
- Marrow
- Mars
- Mars (Episode 3)
- Mars - der Wüstenplanet
- Mars Ascendant Box Set
- Mars Base
- Mars Burning
- Mars Calling
- Mars Child
- Mars Colony Agatha: Nikki Red
- Mars Craves Men: A Gay Time Travel Sci-Fi Adventure
- Mars Discovery
- Mars ein Mysterium offenbart sich
- Mars Heat
- Mars is My Destination
- Mars la bleue (T. 3)
- Mars la rouge (T. 1)
- Mars la verte (T. 2)
- Mars Life
- Mars Lottery
- Mars McCoy and the Curse of the Star Lance
- Mars Meeting
- Mars Override
- Mars Rising
- Mars Station Mission. 4244-4248 AD. Archeologist Nemesis.
- Mars: Book 5
- MarsAffairs
- Marsbound
- MarsAffairs
- Marsbound
- Marsbéli krónikák
- Marsch der Könige (Band 2 im Ring der Zauberei)
- Marshal
- Marshal Keller and the Blackheart Gang
- Marshal keller: Adventures in Old Mexico
- Marshal Melinda McKee
- Marshall's Guard
- Marshmallow World
- Marsjański poślizg w czasie
- Marta
- Marte Robot
- MARTHA
- Martha`s Home For Wayward Preppers
- Martian Divides
- Martian Dog
- Martian Super Pack
- Martian Terror and two more stories
- Martian Time-Slip
- Martians Never Die
- Martin Takener - Abenteuer im All
- Martyr
- Martyrs of the Mind
- Marune: Alastor 933
- Marvel: Spider-Man. Wiecznie młody
- Mary and the Giant
- Mary Celeste Adrift
- Mary Modern
- Mary of the New Dispensation
- Marya
- Mascarad city
- Maschinenschmerz
- Maschinentod
- Maschinenwahn
- Mask of Ashes
- Mask of Death
- Mask of Gold
- Mask Pretty
- Maske: Thaery
- Masked
- Maskiner som mig
- Maskinminnen
- Masks of the Illuminati
- Masks of the Martyrs
- Masquerade