- Councils and synods, Ecumenical1
- Courtesy books1
- Courtly love1
- Courts1
- Coutinho, Francisco de Sousa, 1597 or 1598-16601
- Criminals1
- Crucifixion of Jesus Christ1
- Crusades (Second) (1147-1149)1
- Cur Deus homo (Anselm, Saint, Archbishop of Canterbury)1
- Cynics (Greek philosophy)1
- Czech Republic1
- Czech Republic--Bohemia1
- Czech Republic--Brno1
- Dance1
- Daniel (Biblical figure)1
- Darius I, King of Persia, 548 B.C.-485 B.C.1
- Dated and datable manuscripts1
- De bello Gallico (Caesar, Julius)1
- De generatione et corruptione (Aristotle)1
- De gradibus humilitatis et superbiae (Bernard, of Clairvaux, Saint)1