- Lab Rat 2020: Mind = Machine
- Labworld Earth Book One: Horseplay
- Labyrinth of Night
- Lacuna
- Lady of Mazes
- Las montañas de la aflicción
- Las rutas de Marte
- Laser Baron
- Last and First Idol
- Last and First Men
- Last Chance
- Last Enemy
- Last of the Immortals
- Last Thing
- Latency
- Lawmen And Crimefighters
- Lazarus
- Le Balene di Maath / Zombie Carpocalypse
- Le berceau de Zachary
- Le Cycle des Trois Marches
- Le dimensioni della mente 0, 1 e 2
- Le jeu continue après ta mort
- Le Jeu des coquilles de nautilus
- Le lune di Avel
- Le macchine
- Le manège
- Le message de Proteus
- Le pacte du bespryzorniki
- Le prix de la jeunesse
- Le robot de trop
- Le syndrome de Dardène
- Le Tunnel (Tome 2)
- Leader of the Losers
- Learning The World
- Legacy, Book 7: 100 Proof
- Legacy: The Awakening
- Legame di Fuoco: Al di là del Fronte Alieno
- Legends of the Duskwalker (Limited Edition)
- Leibnizovo Kritérium
- Leibnizovo Kritérium
- Leibnizovo kritérium
- Leon und Ma-at
- Leopold Einstein in the Sixteenth Dimension
- Les Enfants de Calliope
- Les extracteurs
- Les femmes viennent de Mars et les hommes, de Vénus
- Les Machines de l'esprit
- Les Mystères de l’Inconscient, cachés sur l’île de Noureev
- Lessons of Our Legends
- Lest We Forget Thee Earth
- Let 'Em Breathe Space! And eight more stories
- Letters from Atlantis
- Levegőkovács
- Leviathan Wakes
- Lex est voluntas
- Lezioni sul domani
- Liam & Kirby: On-Off
- Liberation
- LIBERTÉ
- Lichtkrieg
- Lichtzeit
- Life, the Universe and Everything
- Lifeboat, 2028
- Light and Shadow: Eight Short Stories
- Light Quest
- Lightning On Saratoga Ave.
- Lightship Chronicles Chapter 6: The Junker
- Limbes (Les Derniers Humains : Tome 2)
- Limbo
- Limbus - The Last Humans
- Line War
- Liquid Muse
- Little Fuzzy
- Little Heroes
- Livid Skies
- Living Science – 3. Decisive experiment
- Livro Fundação Volumes 1 Ao 7 - Isaac Asimov: Fundação, Prelúdio à Fundação, Origens da Fundação, F...
- Lizard-Monkeys and Other Stories
- Lo sguardo sul Maelstrom
- Load Bearing Member
- Lone Star Planet
- Long Night in a Hot Tub
- Long Way Home
- Looker
- Looking Through Lace
- Lord of a Thousand Suns
- Lord Prestimion
- Lords of the Stratosphere
- Lorenzo MacEwan, Netective
- Los cazahuesos (Malaz: El Libro de los Caídos 6)
- Los improductivos
- Los últimos libres
- Losing Human
- Loss Of Reason: A Thriller (State Of Reason Mystery, Book 1)
- Loss of Signal
- Lost Earth
- Lost in Transmission
- Lost Race of Mars
- Lost Time
- Love and Family During the Great Death
- Love Conquers All
- Love Lost in Time Relativity
- Love, Death, and Overlapping Bosonic Singularities
- Love-Bot
- Love: Catgut
- Lucidity
- Lucifer's Hammer
- Lucky 7
- Lucky 8
- Lucky Head Robot #7777
- Lucky Land
- Luminaria
- Lumière noire
- La Lumière sous la Porte
- Luna: Holdkelte