Encyclopedias, Almanacs, Transcripts, and Maps
- Ciudad Guzmán
- Ciudad Porfirio Díaz
- civil commitment
- Civilian National Security Infrastructure
- Civilis
- Civitali, Matteo
- Clackmannan
- Clactonian
- Claflin, Tennessee
- Claiborne, Craig
- Claiborne, William Charles Coles
- Clairton
- Clallam
- clam shrimp
- Clamart
- clamworm
- Clancy, Tom
- Clanricarde, Ulick de Burgh, 5th earl and marquess of
- Clapp, Louise Brough
- Clapp, Verner