Former Owner
- Charles-Gilbert Morel de Vindé1
- Christophorus de Stinglhaim1
- Clara von Vorssel1
- Clarence Howard Clark, Sr.1
- Clarence S. Bement2
- Claude d'Urfé2
- Coella Lindsay Ricketts15
- Coggeshall Abbey1
- Cortlandt F. Bishop2
- Couvent des pères Franciscains (Monte-Carlo, Monaco)1
- Dahīʹzādah1
- Dame Margery Byrkenhed1
- Darvīsh Aḥmad Khākiyānī1
- David Eugene Smith143
- David Laing1
- Dawson Turner1
- Diego Clemencín1
- Diego Llorente1
- Diego de Arce y Reinoso1
- Domenico Levera1