Books about Science fiction (sorted alphabetically)
- Conditionally Human Walter M. Miller
- Con-Fen James R. Adams
- Confidence Game Jim Harmon
- Confidence Game James McKimmey
- Conjurer of Venus Conan T. Troy
- Connoisseur Frank Banta
- Conquest of America: A Romance of Disaster and Victory, U.S.A., 1921 A.D. Cleveland Moffett
- Conquest Over Time Michael Shaara
- Conquistadors Come Mary Elizabeth Counselman
- Conservation Charles L. Fontenay
- Consignment Alan Edward Nourse
- Conspiracy on Callisto Frederik Pohl
- Consulate William Tenn
- Contact Point Jack Sharkey
- Contagion Katherine MacLean
- Contamination Crew Alan Edward Nourse
- Cool War Andrew Fetler
- Copper-Clad World Harl Vincent
- Corbow's Theory Lee Wallot
- Corpus earthling Louis Charbonneau
- Cosmic Bluff Mack Reynolds
- Cosmic Castaway Stanley Mullen
- Cosmic Castaway Carl Jacobi
- Cosmic Computer H. Beam Piper
- Cosmic Courtship Julian Hawthorne