Books about Science fiction (sorted alphabetically)
- Comet's Burial Raymond Z. Gallun
- Coming Attraction Fritz Leiber
- Coming Conquest of England August Niemann
- Coming of the Gods Chester Whitehorn
- Coming of the Ice Green Peyton
- Coming Race Baron Edward Bulwer Lytton Lytton
- Common Denominator John D. MacDonald
- Common Man Mack Reynolds
- Communication Charles L. Fontenay
- Community Property Alfred Coppel
- Compatible Richard Rein Smith
- Compete or Die! Mark Reinsberg
- Competition James Causey
- Concordance: A Terran Empire concordance Ann Wilson
- Conditionally Human Walter M. Miller
- Con-Fen James R. Adams
- Confidence Game James McKimmey
- Confidence Game Jim Harmon
- 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