- Copyists1
- Corbinelli, Bernardo1
- Corbinelli, Girolamo1
- Corbinelli, Pandolfo1
- Cornerpieces (Furniture)1
- Coronations1
- Correspondence9
- Correspondence (Cyprian, Saint, Bishop of Carthage)1
- Cortigiani, Giovanni1
- Cosimo I, Grand-Duke of Tuscany, 1519-15742
- Cosimo II, Grand Duke of Tuscany, 1590-16211
- Cosimo III, Grand-Duke of Tuscany, 1642-17231
- Cosmetics--Moral and ethical aspects1
- Cosmography10
- Cosmology4
- Coton, Pierre, 1564-16261
- Cottricciaio, Mariotto1
- Council of Basel2
- Country life3
- Courtesy books1