Encyclopedias, Almanacs, Transcripts, and Maps
- Cox, William Edward (1915-1994)
- Cox, William Sebron (1939-)
- Coypu
- Coypu
- Coypu: Myocastoridae
- CP Symmetry Violation
- Crab Plover: Dromadidae
- Crabs, Shrimps, and Lobsters: Decapoda
- Cracking the Genetic Code
- Craddock, Frederick G. Foster (ca. 1920)
- Cramp-Rings, Hallowing
- Crandon, Mina Stinson ("Margery") (1889-1941)
- Crane-Heise Syndrome
- Cranes, Rails, and Relatives: Gruiformes
- Cranes: Gruidae
- Cravings
- Crawford W. Long
- Crawford, William Jackson (1881-1920)
- Creatures of the Night
- Credits