- Coligny, Gaspard de, seigneur de Châtillon, 1519-15721
- Collault, Étienne, active 1512-15451
- Commandments, Six hundred and thirteen1
- Compass1
- Compendium theologicae veritatis (Hugo, Argentinensis)1
- Confession (Canon law)1
- Confraternities1
- Congregazione di San Giorgio in Alga (Venice, Italy)1
- Congregação di San João Evangelista (Portugal)1
- Consanguinity (Canon law)1
- Conscience1
- Conspiracy of Catiline (Rome : 65-62 B.C.)1
- Constantine XI Palaeologus, Emperor of the East, 1405-14531
- Constitutional history1
- Contubernium rosae1
- Copyists1
- Cornelio, Giovanni1
- Cosmology1
- Coton, Pierre, 1564-16261
- Council of Pisa--(2nd : 1511-1512)1