Books in Science Fiction (sorted alphabetically by author)
- Security Risk Ed M. Clinton
- The Semantic War Bill Clothier
- Flight Through Tomorrow Stanton A. Coblentz
- Warning from the Stars Ron Cocking
- Nothing But the Best Alan Cogan
- The Amateurs Alan Cogan
- Say "Hello" for Me Frank W. Coggins
- The Players Everett B. Cole
- The Weakling Everett B. Cole
- Millennium Everett B. Cole
- Indirection Everett B. Cole
- Final Weapon Everett B. Cole
- The Best Made Plans Everett B. Cole
- Alarm Clock Everett B. Cole
- Question of Comfort Les Cole
- Half past Alligator Donald Colvin
- The Celestial Hammerlock Donald Colvin
- The Sound of Silence Barbara Constant
- The Runaway Asteroid Michael D. Cooper
- Turnover Point Alfred Coppel
- Turning Point Alfred Coppel
- The Peacemaker Alfred Coppel
- The Invader Alfred Coppel
- The Hills of Home Alfred Coppel
- Double Standard Alfred Coppel