Encyclopedias, Almanacs, Transcripts, and Maps
- Castelvitch, Countess (ca. 1920)
- Castruccio, Peter Adelbert (1925-)
- Catabolignes
- Catalyst and Catalysis
- Catalyst and catalysis
- Catalyst and Catalysis
- Catastrophic Mass Movements
- Catechol-O-methyltransferase Inhibitors
- Catfishes: Siluriformes
- Catherine Greene
- Catheters
- Catheters
- Cathleen Synge Morawetz
- Cathode Ray Tube
- Cathode ray tube
- Cats, Elfin
- Cats: Felidae
- Cattails
- Cattails
- Cattle family (Bovidae)