- Caracciolo, Antonio, 1515?-15701
- Carretto, Giovanni Francesco1
- Cartularies1
- Castro, João de, 1500-15481
- Categoriae (Aristotle)1
- Catherine, of Alexandria, Saint2
- Catherine, of Siena, Saint, 1347-13801
- Catholic Church50
- Catholic Church. Archdiocese of Breslau (Germany)1
- Catholic Church. Curia Romana2
- Cathédrale de Chartres1
- Celsus, Saint, -681
- Chained bindings4
- Chaldean rite (Catholic Church)1
- Charity1
- Charlemagne, Emperor, 742-8142
- Charles IX, King of France, 1550-15741
- Charters1
- Chess2
- Children--Diseases1