- K – the Last Warrior
- K'Barthan Box Set
- K'Jin Released
- K'Zarina the Blood Queen
- Kabuki-cho Cabaret
- Kad's Arcade
- Kadakas Iv
- Kadin
- Kaelum: The Book Of Legend
- KAI-ME-RAH
- Kaiden
- Kaiju Rising
- Kaiju Rising II
- Kaine's Reparation
- Kaine's Retribution
- Kaine's Sanction
- Kaja Star: No Place Like Home
- Kal's Fall (The Teristaque Chronicles - Part One)
- Kaleidoskop der Welten
- Kalina Theus and the Death Vision
- KALION. Die zwölf Kronen
- Kall Sömn (Cold Sleep)
- Kalte Berechnung
- Kamaria (Birth of a new breed)
- Kamera által homályosan
- Kampf gegen die Zukunft
- Kampf in der Galaxis
- Kampf um ihre Partnerin
- Kampf um Phaeton
- Kanana: The Jungle Girl
- Kaos Genesis
- Karawane
- Karibikgold
- Karl Redhand
- Karma (Metatron's Army Chronicles, Book 1)
- Karnivaal Season
- Karriere: Superheldin
- Kasai: Outback
- KASKADE Dormir
- KASKADE Inkarnation
- Kat and Mouse, Guns For Hire: Payback
- Kat Sextet 1
- Kat Trio 1
- Kate of Kratos
- Kate on a Hot Tin Roof
- Katieran Prime Celebration
- Katieran Prime Miracle
- Katy: Book 2 of the ROE Chronicles
- Katya and the Solar Wind (Life After Earth Series Volume One)
- Kau D'varza
- Kauffahrers Glück
- Kaukų draustinis
- Kavidian
- Kawokee
- Kayelle's Return
- Kayleb
- Kazohinia
- Kazungul - Book 2
- KB's Log
- Keduan - Planet der Drachen
- Keelic and the Pathfinders of Midgarth
- Keelic and the Space Pirates
- Keene
- Keep Off The Grass
- Keep Your Enemies Close
- Keeper of the Goddess
- Keeper of the Keys
- Keepers of the Blue Planet
- Keepers Of The Sapphire
- Kein Durcheinander
- Kein Durcheinander: Science-Fiction-Klassiker
- Keith Laumer Super Pack
- Kellen
- Kelly Country
- Kelwitts Stern
- Kemamonit Pursued
- Kemamonit Returns
- Kemamonit Undercover
- Kemamonits Library
- Kemitt Mirrors
- Kenobi: Star Wars
- Kent Montana and the Once and Future Thing
- Kent Montana and the Really Ugly Thing from Mars
- Kent Montana and the Reasonably Invisible Man
- Kepler's Cowboys
- Kepler-438b
- Kerlock - Welt der Trugbilder
- Kerlock - Wereld van Mirages
- Kerlock - World Of Mirages
- Ketairne
- Ketner
- Kev: Delivery Man
- Kev: Merry Christmas
- Key Out of Time
- KeyForge: Tales From the Crucible
- Keys
- Khan
- KHAOS
- Ki Book One
- Ki Book Two
- Kicking Bots
- Kicking the Desk Job
- Kid Nitro and the Sinister Slorp
- Kidnapped
- Kidnapped?!! The Continuing Search
- Kidnappers from the Future
- Kifo
- Kiljorn Commander
- Kiljorn Prime
- Kill Ball
- Kill Before Dying
- Kill Chain
- Kill Orbit
- Kill Shot
- Kill Them All
- Kill Them Wherever You Find Them
- Killashandra
- Killborg
- Killgrace and the Inverted Planet
- Killing Adam
- Killing Gravity
- Killing Moon
- Killing Thoreau
- Killing Time
- Killshot
- Kilo Class
- Kilroy was Here
- Kilégzés és más novellák
- Kimono Coconut
- Kincsesbolygó
- Kinder der Ewigkeit
- Kindred Spirits
- King
- King David's Spaceship
- King of Legend