Encyclopedias, Almanacs, Transcripts, and Maps
- coolie labor
- cooling system
- coon
- coon cat
- Coon Rapids
- Cooper, Alexander
- Cooper, Alfred Duff, 1st Viscount Norwich of Aldwick
- Cooper, Anthony Ashley
- Cooper, Leon Neil
- Cooperative Commonwealth Federation
- Cooperative Extension Service
- Cooperative State Research, Education, and Extension Service
- Coos
- Coos Bay
- Coosa
- Copahue
- copaiba
- Copán
- Coparenting
- Cope, Saint Marianne