- Capponi, Niccolò1
- Care of the sick1
- Carnesecchi, Amerigo1
- Caroline minuscule1
- Carretto, Federico del1
- Carretto, Felicita del1
- Carretto, Geronimo del1
- Carretto, Giovanni del1
- Carretto, Paolo del1
- Carthusians1
- Casini, Vergilio1
- Casting off1
- Catherine, of Alexandria, Saint1
- Catherine, of Siena, Saint, 1347-13801
- Catholic Church. Archdiocese of Wrocław (Poland)1
- Cecco, d'Ascoli, 1269-13271
- Certano, Daina di1
- Cesare d'Este, Duke of Modena and Reggio, 1552-16281
- Chained bindings1
- Charity laws and legislation1