Encyclopedias, Almanacs, Transcripts, and Maps
- Coffin, Henry Sloane
- Cogswell, Joseph Green
- Cohen, Samuel Theodore
- Cohen, Stanley
- Cohen-Tannoudji, Claude Nessim
- Cohnheim, Julius
- cohosh
- coiffure
- Coimbatore
- Cointreau
- Cojutepeque
- Colatina
- Colbert, Charles
- Colborne, John
- Colby College
- Colby, Bainbridge
- cold storage
- Coldwell, Major James William
- Cole, Margaret Isabel (Postgate)
- Cole, Timothy