- Cords1
- Cornelio, Giovanni1
- Cornell University1
- Corners (furniture)1
- Coronations1
- Corpus commentariorum Averrois in Aristotelem (Averroës)1
- Corpus juris civilis1
- Correspondence (Cyprian, Saint, Bishop of Carthage)1
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- Corsini, Bartolomeo1
- Corsino, Pietro di1
- Cortesi, Girolamo1
- Cortigiani, Giovanni1
- Cosimo II, Grand Duke of Tuscany, 1590-16211
- Cosimo III, Grand-Duke of Tuscany, 1642-17231
- Cosmetics--Moral and ethical aspects1
- Cosmochronology1
- Costapellegrina, Giovan Andrea1
- Coton, Pierre, 1564-16261
- Cottricciaio, Mariotto1