Encyclopedias, Almanacs, Transcripts, and Maps
- Carson Sink
- Carstensz, Mount
- Cartago
- Cartan, Élie Joseph
- Cartan, Henri
- Carter Family
- Carter, Gary Edmund
- Carter, Hodding
- Carteret Islands
- Carteret, John
- Carteret, Sir George
- Cartes Jara, Horacio Manuel
- Cartesian philosophy
- Cartwright, Sir Richard John
- Caruaru
- Carucci, Jacopo
- Carus
- Casa Fuerte, Juan de Acuña, marqués de
- casaba melon
- Casal, Julián del