- Crankie Williams Does Penance
- Crankie Williams Goes Ballistic
- Crankie Williams Goes Pirate
- Crankie Williams Goes to War
- Crash
- Crash Landing
- Crash Wagon: Book One - Family Ties
- Crash Wagon: Book Three - Enemies and Allies
- Crash Wagon: Book Two - Menomonee Falls
- Crashed in the Outlands ~ Sci-Fi Alien Erotic Adventure
- Crashed: Science Fiction Romance
- Crashing Suns
- Crater Trueblood and the Lunar Rescue Company
- Craving Space
- Crawlspace
- Crazy Rich Aliens
- Creating The Myth: A Prequel To "Stranger Than Fiction", Book 1: The Promise Of Redemption
- Creations
- Creations: The Calling Series (Book 3)
- Creator's End
- Creators
- Creators of the Galaxy
- Creatura
- Creature Hunt on Planet Toaria
- Creatures
- Creatures of the Light
- Creatures of the Night
- Creed of the Stars:
- Creep, Shadow
- Crescent
- Crescent Earth
- Crestahn Kingdom
- Cretaceous Dawn
- Crew Extraction
- Crewel Lye
- Cries from the Dust
- Crilen and the War of False Prophets
- Crimes Against Humanity
- Crimes of the Hub
- Criminal Justice
- Criminals Within
- Crimson
- Crimson Fire
- Crimson Son
- Crimson Son 3: Ashes
- Crimson Son 4: Legacy
- Crimson Tempest
- Crionizados
- Crises and Conflicts
- Crisis at Validor
- Crisis Evolution
- Crisis in the Ashes
- Crisis of Consciousness
- Crisis on Callisto
- Crisis On Flight 101
- Crisis On Sandar
- Critical Contingencies
- Critical Point
- Critical Threshold: Daedalus Mission 2
- Crocalypse
- Crompton Divided
- Cronaca galattica
- Cronache dalla seconda guerra dell’acqua
- Cronache di Tuhitun. Selzerorg
- Cronache di Wolfopolis I
- Cronus
- Crooked Pieces: Future Grit And Hard-Boiled Action - Part One
- Crooked Pieces: Future Grit And Hard-Boiled Action - Part Three
- Crooked Pieces: Future Grit And Hardboiled Action - Part Two
- Crooked Stars
- Cross Evolution
- Cross, the Hunter
- Cross-Stitch
- Crossbreed
- Crossed Wires
- Crosses and Runes
- Crossfire
- Crossfire & Other Stories
- Crossing Point
- Crossing Xavier
- Crossroad's of Destiny
- Crossroads of Destiny
- Crossroads of the Galaxy
- Crow: The Awakening (Crow Series, Book 1)
- Crown of Light: Aero
- Crown of Renewal
- Crown of Stars
- Crown of Vengeance
- Crucible
- Crucible of Gold
- Crucible of Stars
- Crucible Of Truth
- Crum's Crystals
- Crusade
- Crusade Across Worlds
- Crusade For Vengeance
- Crusade, Book 4 of The Turner Chronicles
- Crusade: Fallen Angels - Book 3
- Crusher
- Crux
- Cry Havoc
- Cry Pilot
- Crydynelm
- CRYO: A Changed World
- CRYO: Rise of the Immortals
- CryoBurn (Vorkosigan Saga)
- Cryonic Man: A Paranormal Affair
- Cryptic (Garbageman Book 2)
- Crypto-Chronicles:
- Crysis
- Crysis City Book 1
- Crystal Cleanser Dem
- Crystal Healer
- Crystal of Life
- Crystal Possession: Imagination Island
- Crystal Skull Series: 2 Angel Orchid
- Crystal Souls
- Crónicas Análogo-Digitales
- Crónicas de un Viajero
- Crónicas de una Valquiria: El Regreso de Asgard
- Csillaghatár
- Csordulj, könnyem, mondta a rendőr
- Cuando las luces aparezcan
- Cubeball
- Cubs of the Wolf
- Cuentos de espacio y del tiempo
- Cuentos de la Vía Láctea
- Cuervo Escarlata
- Cull
- Cull Reborn
- Cull Revolution
- Cult Fiction
- Cultivar
- Cultural Exchange
- Culture Clash
- Cuore di legno
- Cup Dreams
- Cupid’s Bow
- Curai'Nal
- Curefinder (Black Bloods, Novella Prequel)
- Curious Notions