Former Owner
- Caesareum Societatis Jesu Collegium Viennense1
- Cambrai Cathedral1
- Cambron Abbey1
- Camillo Riccio1
- Carl Alphons Geigy-Hagenbach1
- Carleton Rubira Richmond1
- Carlo Francesco Frasconi1
- Carlos José Gutiérrez de los Ríos y Rohan Chabot Fernán-Núñez1
- Casey Albert Wood1
- Caspar René Gregory1
- Castel-Lodève family1
- Castelluci1
- Catharine Wisser1
- Catherina van Drenckwaert1
- Catherine de' Medici1
- Cecil Deedes1
- Cecil Dunn Gardner1
- Cecil H. Clough1
- Cecil Mallaby Firth1
- Chacère Family1