- Carretto, Giovanni del1
- Carretto, Paolo del1
- Carthusians6
- Cartularies1
- Casa, Lodovico della1
- Case grammar2
- Casini, Ciulla1
- Casini, Vergilio1
- Caste8
- Caste--Religious aspects--Hinduism3
- Castello di Rapolano (Rapolano Terme, Italy)1
- Castles1
- Castrucci, Antonio1
- Catherine, of Alexandria, Saint5
- Catherine, of Siena, Saint, 1347-13801
- Catholic Church161
- Catholic Church. Archdiocese of Cologne (Germany)3
- Catholic Church. Archdiocese of Florence (Italy)1
- Catholic Church. Archdiocese of Reims (France)1
- Catholic Church. Archdiocese of Siena (Italy)5