- Cortigiani, Giovanni1
- Cosimo I, Grand-Duke of Tuscany, 1519-15741
- Costapellegrina, Giovan Andrea1
- Cottricciaio, Mariotto1
- Court decisions and opinions1
- Courtesy books1
- Courts and courtiers1
- Coutinho, Francisco de Sousa, 1597 or 1598-16601
- Covoni, Luigi de1
- Cresci, Mariotto1
- Crespo, Johannes1
- Criminal law1
- Criminals1
- Cristofano, Filippo di1
- Cristoforo, Pietro di1
- Crusades (Fifth) (1218-1221)1
- Crusades (Second) (1147-1149)1
- Cueva y de Castilla, Beltrán III de la, Duke of Alburquerque, -16121
- Customs administration1
- Cynics (Greek philosophy)1