Encyclopedias, Almanacs, Transcripts, and Maps
- Channoidei (Snakeheads)
- Chantepie de la Saussaye, P. D.
- Chanting
- Characiformes (Characins)
- Charadriiformes (Gulls, Terns, Plovers, and Other Shorebirds)
- Charles law
- Chechenia
- Chelyabinsk, Russia
- Chemical Spills
- Chemistry of Water
- Cheng Hao
- Cheng Yi
- Chernobyl Nuclear Power Station
- Cherokee Religious Traditions
- chess opening position
- Chevrotains (Tragulidae)
- Chhatisgarh
- Chichester, Sir Francis Charles
- Child Survival Revolution
- Chilopoda (Centipedes)