Books about Science fiction (sorted alphabetically)
- Countdown Julian F. Grow
- Counterweight Jerry Sohl
- Course of Empire Richard Wilson
- Course of Logic Lester Del Rey
- courts of Jamshyd Robert F. Young
- Crack of Doom Robert Cromie
- Craphound Cory Doctorow
- Crash Beam John Barrett
- Crashing suns Edmond Hamilton
- Creature from Cleveland Depths Fritz Leiber
- Creature Inside Jack Sharkey
- Creatures of the Abyss Murray Leinster
- Creatures of Vibration Harl Vincent
- Creatures That Time Forgot Ray Bradbury
- Criminal Negligence J. Francis McComas
- Crisis! C. M. Kornbluth
- Crisis on Titan James R. Adams
- Critical difference Murray Leinster
- Cronus of the D. F. C. Jr. Lloyd Biggle
- Crossroads of Destiny H. Beam Piper
- Crowded Colony Jerome Bixby
- Cry Chaos! Dwight V. Swain
- Cry from a Far Planet Tom Godwin
- Crypt-City of the Deathless One Henry Kuttner
- Cry Snooker Andrew Fetler