- Catch
- Catch a Falling Star
- Catch A Tiger
- Catch of the Day
- Catching Lightning
- Catching the Dead Eye Special
- Catgirl: Dark Harvest (Synne City Super Heroines in Peril)
- Catgirl: Moonstruck
- Catgirl: Moonstruck (Synne City Super Heroines in Peril)
- Catgut Anthology
- Cats and Dogs
- Cats and Dogs 後編
- Cats in Space
- Cats in Space and Other Places
- Cats of War I
- Cats of War II
- Catseye
- Catspaw
- Cattedrali
- Cattitude
- Cattive notizie dal Vaticano
- Cauldron
- Cauldron of Ghosts
- Cauldron of Life
- Causality
- Cause and Consequence
- Cause impossibili
- Cautionary Tales
- Cautious Hope
- Cavanaugh's Cure
- Cave of Sorrows
- Cave Terror
- Cavern- A Dane Maddock Adventure
- Cavernauts
- Caverns of Mercury
- Caves of Ice: Part 1
- CAVIE
- Cavie "Cellule dormienti"
- Cazadores de Sueños
- Caça ao Tesouro
- Caça aos Anormais
- Ce qui grignotait le fond de l'univers
- Ceasefire
- Ceaseless West: Weird Western Stories from Beneath Ceaseless Skies Online Magazine
- Cecily - Tome 1
- Cedimento strutturale
- CEGADOS
- Cegados Parte I
- Cegados Parte II
- CEGADOS Parte II
- CEGADOS Parte III
- Cegados Parte III
- Celebrity Space
- Celestial
- Celestial Automation
- Celestial Capers
- Celestial Celeste
- Celestial Empire
- Celestial Fire (The String Weavers - Book 7)
- Celestial Scourge
- Celestial Torrent
- Celestis
- Celistic
- Celistic. Патриоты
- Celistic. Эхо мира
- Celistic: Пиратская история
- Cell Division
- Cellmates
- Cementerio de Naves Espaciales
- Cenchrea
- Cenere
- Ceneri
- Centalpha 6 Omnibus
- Centalpha 6 Part I
- Centalpha 6 Part IV
- Centalpha 6 Part IX
- Centalpha 6 Part V
- Centalpha 6 Part VI
- Centalpha 6 Part VII
- Centalpha 6 Part VIII
- Centaur Aisle
- Centauren-Trilogie
- Centauri
- Centauria
- Center
- Center of the Universe
- Center of the World
- Center Worlds: Spark
- Cento giorni
- Centralino Celeste
- Centre of Gravity
- Centrex Core Theory
- Centro Ristrutturazione Temporale
- Centurion III
- Centurion: Before the Smuggler's Court
- Centurion: In the Valley of the God-Kings
- Century Run
- Cerah
- Cerberus
- Cerberus: A Wolf in the Fold
- Cercando un Altrove
- Cerelia's Choice
- Ceremonies and Celebrations: Deveran Conflict Series Book IV
- Cero Negativo
- Ceremonies and Celebrations: Deveran Conflict Series Book IV
- Cero Negativo
- Cerridwen
- Certain Private Conversations... And Other Stories
- Cervelli Prestati
- Cesario Aero
- Ceti
- CFPI's Marvin Stanton's War
- Chaacetime: The Origins - Book 2
- Chacun son tour (Pas de paradis sans... l'enfer, vol. 7)
- Chaga
- Chain of Command
- Chain of Secrets
- Chain of Starlight
- Chain Reaction
- Chains of Perception
- Chainsaw
- Chainsaw Raptor vs. Rocket Launcher Rhino
- Chakra
- Chak’r’Das
- Chalice of Shadows
- Challenge Accepted
- Challenge of Antares [Dray Prescot #48]
- Challenger Park
- Challenger Rising
- Chameleons
- Champ
- Champion of Hollow Earth
- Champion's Call
- Champions of the Apocalypse
- Champions of the Force: Star Wars (The Jedi Academy)
- Chance for the Future
- ChanceShaper
- Chanda's Awakening
- Chandler's Secret Princess: Holy Christian Empire 2405
- Change Agent
- Change by Design
- Change in Management - A Jim Meade Martian PI Novel
- Change Management
- Change of Command
- Change of Destination
- Change of Momentum
- Change of Plans Episode Four
- Change of Plans Episode One
- Change of Plans Episode Three
- Change of Plans Episode Two
- Change State
- Change the Sky and Other Stories
- Changed
- Changeling
- Changeling (Nexus 5)