- Carlo, Bindo di1
- Carlo, Giovanbattista di1
- Carlos, Prince of Viana, 1421-14611
- Carnesecchi, Alessandro1
- Carnesecchi, Amerigo1
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- Casini, Vergilio1
- Castello di Rapolano (Rapolano Terme, Italy)1
- Castile (Kingdom). Cortes1
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- Castrucci, Antonio1
- Catches1
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- Catholic Church. Archdiocese of Cologne (Germany)1
- Catholic Church. Archdiocese of Florence (Italy)1
- Catholic Church. Archdiocese of Guatemala (Guatemala)1
- Catholic Church. Archdiocese of Mexico City (Mexico)1