Campbell, John Scott,
--The Image and the Likeness, November, 1952. (novel)
Castle, Arnold,
--A Mixture of Genius, June, 1958.
Chandler, A. Bertram, (1912-1984) JG = John Grimes
--Gift Horse, June, 1958.
--A. D. 2050: Albatross, October, 1958.
--Edge of Night (Part 1), #106, September, 1966.
--Edge of Night (Conclusion), #107, October, 1966.
--The Rim Gods, April, 1968. JG (novelette)
--The Bird-Brained Navigator, April, 1968. JG (novelette)
--Last Dreamer, August, 1968. JG (novelette)
--The Tin Fishes, #133, December, 1968. JG (novelette)
Chang, Glenn,
--In the Beginning, #143, December, 1969.
Chapdelaine, Perry,
--Spork of the Ayor, #137, April, 1969. (novella)
--Spork Conquers Civilization, #139, July, 1969. (novella)
Chesbro, George C.,
--The Seventh Man, #150, September-October, 1970. (novelette)
Christopher, John,
--The Name of This City, October, 1954.
Clarke, Arthur C.,
--Jupiter Five, May, 1953. (novelette)
--Ultimate Melody, February, 1957. ("White Hart")
--Out from the Sun, February, 1958.
--The Songs of Distant Earth, June, 1958. (novelette)
--At the End of the Orbit, November, 1961. (novelette)
Clement, Hal, (Harry Clement Stubbs)
--The Green World, May, 1963. (short novel)
--Raindrop, May, 1965.
--The Foundling Stars, #105, August, 1966.
--Ocean on Top (Part I), #119, October, 1967.
--Ocean on Top (Part II), #120, November, 1967.
--Ocean on Top (Conclusion), #121, December, 1967.
Clifton, Mark,
--The Kenzie Report, May, 1953.
--Do Unto Others, June, 1958.
Clifton, Mark, and Alex Apostolides,
--Progress Report, July, 1953.
Clinton, Ed M., Jr.,
--The Small World of M-75, July, 1954. *
--Security Risk, February, 1958.
Coggins, Frank W.,
--Say "Hello" for Me, May, 1953.
Cogswell, Theodore R.,
--The Big Stink, July, 1954.
Collins, Clark,
--Nostradamus, #172, May-June, 1974.
Coney, Michael G.,
--Beneath Still Waters, #152, January-February, 1971.
--The Never Girl, #164, January-February, 1973. (novelette)
Coppel, Alfred,
--The Peacemaker, January, 1953.
--Turning Point, November, 1953.
--Community Property, December, 1954.
--For Sacred San Francisco, #142, November, 1969.
Coulson, Juanita,
--A Helping Hand, #151, November-December, 1970.
Cox, Irving E., Jr.,
--Miracle by Price, October, 1954.
--The Almost- Men, October, 1955. (novelette)
Cramdan, Ralph,
--To the Moon, Alice, April 1, 1961.
Cunningham, Charles D., Jr.,
--The Man Who Flew, November, 1962.