- Junkyard Judy: Rust Gazer's Revenge
- Junkyard Wolves
- Juno
- Juno Rising
- Juno's Twin
- Juno: Book 2
- Junrig
- Jupiter - Illusions of Faith
- Jupiter 10: Ganymed fällt
- Jupiter 11: Countdown für MERLIN
- Jupiter 12: Der ewige Lügner
- Jupiter 1: Kristalltod
- Jupiter 2: Das Artefakt von Ganymed
- Jupiter 37: Kale
- Jupiter 38: Pasithee
- Jupiter 39: Hegemone
- Jupiter 3: Galileo City
- Jupiter 40: Mneme
- Jupiter 43: Arche
- Jupiter 4: Syndikat der Kristallfischer
- Jupiter 5: Jupiters Herz
- Jupiter 6: Gravo-Schock
- Jupiter 7: MERLINS Todesspiel
- Jupiter 8: Wie man Sterne programmiert
- Jupiter 9: DANAE
- Jupiter Found
- Jupiter issue 34: Euporie
- Jupiter Project
- Jupiter Rising
- Jupiter Rising: The Columbus Protocols
- Jupiter Symphony
- Jupiter: Book 1
- Jupons & poisons (Le Pensionnat de Mlle Géraldine***)
- Jurada (Libro #7 del Diario del Vampiro)
- Juramentada (El Archivo de las Tormentas 3)
- Juramento de Cesión
- Juramento de Crianza
- Jurassic and the Great Tree
- Jurassic Ark
- JURASSIC DEAD
- Jurassic Holidays
- Jurassic Park
- Jurassic Pork
- Jurassic Run
- Jurassic Time Riders
- Jurate's Castle
- Jury
- Juryokine
- Jurământ De Glorie (Cartea 5 din Inelul Vrăjitorului)
- Jusqu'aux étoiles
- Just / In Time
- Just a Bit of Magic
- Just a Boy
- Just a Couch
- Just A Dream
- Just A Drop In The Cup
- Just A Fantasy Of Caroline
- Just A Girl
- Just a Little Apocalypse
- Just a Little Nudge
- Just A Little Pixie Dust: Magnolia Mysteries Series
- Just a Little Technology
- Just A Phase (From the Desk of Col. Garrett Ross)
- Just a Smidgen of Magic
- Just A Squeeze Please
- Just a Taste
- Just a Tick of Whimsy
- Just a Tick of Whimsy, Volume 2
- Just a Whim
- Just Aiden
- Just Another Case
- Just Another Customer
- Just Another Day
- Just Another Day in Purgatory
- Just Another Dead Martian
- Just Another Dead White Male
- Just Another Job
- Just Another Judgement Day
- Just Bart
- Just Because
- Just Being Me
- Just Beyond the Other Side Vol 1
- Just Breathe
- Just Business
- Just Call Me M
- Just Cause
- Just Cause Universe Compendium
- Just Checking (A Short Story)
- Just Dig
- Just Eloped
- Just Emily
- Just Emily Russian translation
- Just For A While
- Just Ice
- Just Imagine
- Just In Time
- Just in Time
- Just in Time (Lovers in Time Series, Book 2)
- Just Jewell
- Just Like a Goddess
- Just Like Home
- Just Like Magic
- Just Like Magic: Magic and Mayhem Universe
- Just Like Real People
- Just Like That
- Just Like You
- Just My Luck [a Diz and Dee mystery]
- Just North of Nowhere
- Just off the Path
- Just One Chance
- Just One Day
- Just One Last Dungeon
- Just One More Little Job ...
- Just One More Step