- Contracts (Islamic law)1
- Contubernium rosae1
- Cornelio, Giovanni1
- Correspondence1
- Cortesi, Girolamo1
- Cosimo II, Grand Duke of Tuscany, 1590-16211
- Cosimo III, Grand-Duke of Tuscany, 1642-17231
- Council of Trent1
- Counter-Reformation1
- Courts and courtiers1
- Creation1
- Cryptography1
- Cyprus--Paphos (District)1
- Czech Republic1
- Danii︠a︡l-sultan1
- Davanzati, Francesco1
- Dawwānī, Muḥammad ibn Asʻad, 1426 or 1427-1512 or 1513. Risālah qadīmah li-ithbāt al-wājib1
- Dawwānī, Muḥammad ibn Asʻad, 1426 or 1427-1512 or 1513. Ḥāshīyah al-qadīmah al-Jalālīyah1
- Days1
- De interpretatione (Aristotle)1