- Coptic Church3
- Coptic language3
- Corvus3
- Cosimo I, Grand-Duke of Tuscany, 1519-15743
- Counter-Reformation3
- Dalāʼil al-khayrāt (Jazūlī, Muḥammad ibn Sulaymān)3
- Dawwānī, Muḥammad ibn Asʻad, 1426 or 1427-1512 or 1513. Risālah al-qadīmah fī ithbāt al-wājib3
- Dawwānī, Muḥammad ibn Asʻad, 1426 or 1427-1512 or 1513. Risālah qadīmah li-ithbāt al-wājib3
- De interpretatione (Aristotle)3
- De' Medici, Luigi, principe di Ottaviano, 1759-18303
- Deadly sins3
- Death--Religious aspects--Catholic Church3
- Decorated edges3
- Demonology3
- Despotism3
- Dhimmis (Islamic law)3
- Dialogues3
- Dialogues (Literature)3
- Discoveries in geography3
- Divination--Religious aspects--Islam3