- Carlos, Prince of Viana, 1421-14611
- Carnesecchi, Amerigo1
- Carretto, Giovanni Francesco1
- Casini, Vergilio1
- Casting off1
- Castles1
- Castro, João de, 1500-15481
- Catches1
- Cathedrals1
- Catherine, of Alexandria, Saint1
- Catholic Church. Archdiocese of Breslau (Germany)1
- Catholic Church. Archdiocese of Guatemala (Guatemala)1
- Catholic Church. Archdiocese of Mexico City (Mexico)1
- Catholic Church. Archdiocese of Oaxaca (Mexico)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
- Cavallero, Diego1