- Corbinelli, Bernardo1
- Corbinelli, Girolamo1
- Corbinelli, Pandolfo1
- Cornelio, Giovanni1
- Corporation law (Islamic law)1
- Correspondence (Cyprian, Saint, Bishop of Carthage)1
- Corró de Munt (Spain)1
- 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
- Cosmology1
- Cosmology, Ancient1
- Cotton trade1
- Cottricciaio, Mariotto1
- Council of Trent1
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