- Caravaggio, Giovanni1
- Cardinal virtues1
- Carli, Giovanfrancesco de'1
- Carlo, Bindo di1
- Carlo, Giovanbattista di1
- Carnesecchi, Alessandro1
- Cartularies1
- Casa, Lodovico della1
- Casini, Ciulla1
- Castello di Rapolano (Rapolano Terme, Italy)1
- Castrucci, Antonio1
- Catholic Church. Archdiocese of Florence (Italy)1
- Catholic Church. Archdiocese of Reims (France)1
- Catholic Church. Curia Romana1
- Catholic Church. Diocese of Cortona (Italy)1
- Catholic Church. Diocese of Sion (Switzerland)1
- Catholic Church. Diocese of Toul (France)1
- Cathédrale Saint-Etienne (Toul, France)1
- Cattani, Biagio1
- Cattani, Giovanni1