- Collégiale Saint-Vincent de Soignies1
- Collégiale Sainte-Gertrude (Nivelles, Belgium)1
- Colombino, Giorgio di1
- Colored papers1
- Combe, John1
- Comedy plays1
- Commercial law1
- Communion of saints in the liturgy1
- Concini family1
- Concini, Alessandra Antinori1
- Concini, Arrigo1
- Concini, Giovanbattista1
- Confraternitate Sancta Maria Rotunda (Confraternity : Milan, Italy)1
- Confraternities (Canon law)1
- Consanguinity1
- Conscience, Examination of1
- Constantine XI Palaeologus, Emperor of the East, 1405-14531
- Constitutional history1
- Contracts1
- Contro, Mochata di1