Encyclopedias, Almanacs, Transcripts, and Maps
- Captains' Revolution
- Capuana, Luigi
- Capulin Volcano National Monument
- Caquetá
- car sickness
- caracara
- Caraglio, Giovanni Jacopo
- Caraites
- Caramanlis, Constantine
- Caravaca de la Cruz
- Caraway, Hattie Wyatt
- carbaryl
- Carbo, Cneius Papirius
- carbolic acid
- carboloy
- carbon black
- carbon disulfide
- carbon-nitrogen-oxygen cycle
- carbonado
- carbonated beverage