- Carretto, Giovanni Francesco1
- Casini, Vergilio1
- Castles1
- Castro, João de, 1500-15481
- Categoriae (Aristotle)1
- Catherine, of Alexandria, Saint1
- Catholic Church. Archdiocese of Breslau (Germany)1
- Catholic Church. Archdiocese of Salzburg (Austria)1
- Catholic Church. Archdiocese of Wrocław (Poland)1
- Catholic Church. Diocese of Cortona (Italy)1
- Catholic Church. Diocese of Pistoia (Italy)1
- Catholic Church. Diocese of Sion (Switzerland)1
- Catholic authors1
- Celleri, Azzo1
- Celleri, Fabrizio1
- Celleri, Ippolita1
- Chained bindings1
- Chamberlain, Walter, active 16th century1
- Charles VIII, King of France, 1470-14981
- Charters1