Encyclopedias, Almanacs, Transcripts, and Maps
- Castro, José Gil de (c. 1785–c. 1841)
- Castro, Juan José (1895–1968)
- Castro, Julián (1815–1875)
- Castro, Ricardo (1864–1907)
- Catalonian Volunteers
- Catamarca
- CATAPHORA
- Catavi Massacre
- Cateau-Cambrésis, Treaty of (1559)
- Categories
- Catherine de Médicis 1519–1589 French Queen and Regent
- Catherine of Aragon 1485–1536 Queen of England
- Catherwood, Frederick (1799–1854)
- Catholic Action
- Catholic Reformation and Counter-Reformation
- Catholic Workers' Circle
- Cattaneo, Carlo (1801–1869)
- Cattle Ranchers of the Huasteca
- Cauca River
- Cauca Valley