- LitRPG Double Series 1: Epic Adventure Fantasy
- LitRPG Double Series 2: Epic Adventure Fantasy
- LitRPG Double Series 3: Epic Adventure Fantasy
- LitRPG Double Series 4: Epic Adventure Fantasy
- LitRPG: 5 Books: Epic Adventure Fantasy
- Litter Thugs
- Little Brother & Homeland
- Little Fuzzy
- Little Girl Lost
- Little Heroes
- Little People, Big Crimes
- Little Wizard Stories of Oz
- Live Echoes
- Living Forever
- Living in Adztronnox: The Fatherland
- Living in the Future
- Living in the Golden Age
- Living Next Door to the God of Love
- LIving Things
- Living with Aliens
- Lizard-Alien Origins
- Llana de Gathol (Cycle de Mars n° 10)
- Llana of Gathol
- Llegada (Las crónicas de la invasión—Libro dos)
- Llévate 2 a un Precio Excepcional
- Llévate 2 a un Precio Excepcional: El Misterio de los Creadores de Sombras y Colección Completa Cuen...
- Llévate 2 a un Precio Excepcional: Un Comienzo para un Final y Colección Completa Cuentos
- Lo Libre de M'Orgèn
- Lo psiconauta
- Lo sconosciuto
- Lo scrittore - Le avventure di Azakis e Petri
- Lo scudo di Anghor
- Lo sguardo sul Maelstrom
- Lo spazio dei morti viventi
- Lo stabilimento
- Load Bearing Member
- Loading Souls
- Local Star
- Lock of Silver
- Lockdown Sci-Fi #1
- Lockdown Sci-Fi #2
- Lockheed Elite
- Locus Origin
- Lodestar
- Lodestone Book Five: The Conquered Shore
- Lodestone Book Four: Seeds across the Sky
- Lodestone Book One: The Sea of Storms
- Lodestone Book Six: Eternity's Shadow
- Lodestone Book Three: The Crucible of Dawn
- Lodestone Book Two: The World of Ice and Stars
- Log Horizon, Vol. 1 (light novel)
- Log Horizon, Vol. 10 (light novel)
- Log Horizon, Vol. 11 (light novel)
- Log Horizon, Vol. 2 (light novel)
- Log Horizon, Vol. 3 (light novel)
- Log Horizon, Vol. 4 (light novel)
- Log Horizon, Vol. 5 (light novel)
- Log Horizon, Vol. 6 (light novel)
- Log Horizon, Vol. 7 (light novel)
- Log Horizon, Vol. 8 (light novel)
- Log Horizon, Vol. 9 (light novel)
- Logan Ryvenbark's Saga Box Set
- Logan von Sarangkôr #1 - Logan und das Schiff der Ktoor
- Logan von Sarangkôr #2: Logan und die Stadt im Dschungel
- Logan von Sarangkôr: Logan und das Weltentor
- Logan's Run
- Logomachy
- Loki's Children
- Lone Journeyman Book 1: Alligator Dances Part 1
- Lone Journeyman Book 2: Storm Clouds
- Lone Journeyman Book 3: New Lands
- Lone Ranger Legacy
- Lone Star Planet
- Lonely Hearts on Mars
- Lonely Heroes-Book 2
- Long is the Way
- Long Journey to Rneadal
- Longa Knights Arounda Tables
- Longhorn
- Longliner
- Longshot
- Longshot Hypothesis
- Look at the Stars
- Look Down
- Look What's Happened to Mad Science U
- Looker: Lydia Branson, Book 1
- Looking Backward, 2000 to 1887
- Looking For Love In A Bar Called Eternity
- Looking For Trouble
- Looking Through Lace Boxed Set
- Loonie
- Loonmaster
- Loose Cannon
- Lor Dak's Quest
- Lord Foul's Bane
- Lord of a Thousand Suns
- Lord of Light
- Lord of the Earthquake
- Lord of the Underworld: A Ransom & Fortune Adventure
- Lord Prestimion
- Lord Tedric
- Lord Valentine's Castle
- Lords of Mars
- Lords of the Middle Dark
- Lords of the Remnant
- Lords of the Sea
- Lords of the Starship
- Lords of War (Star Crusades: Mercenaries, Book 1)
- Lords Under Reign
- Lore
- Los abisales
- Los Angeles 2170
- Los Angeles: A.D. 2017
- Los Argonautas
- Los confines del cielo
- Los Fantasmas del Nuevo Mundo
- Los Guerreros De La Mente Y El Origen De Los Antiguos
- Los hijos de Caín: El rescate
- Los hijos de la oscuridad
- Los jardines de la Luna (Malaz: El Libro de los Caídos 1)
- Los juegos de Nemesis (The Expanse 5)
- Los Juegos del Hambre de Suzanne Collins (Guía de lectura)
- Los Ojos del Gato
- Los primeros hombres en la luna
- Los Ragasakis (Los Pixies del Caos, Tomo 1)
- Los sueños de GN-I
- Los viajes de Gulliver
- Los ángeles del fango
- Losing Hold
- Losing Mars
- Losing the Peace
- Lost (Land of the Lost Book 1)
- Lost Aeons
- Lost and Found
- Lost Battleships of Karra