Former Owner
- Coppo family1
- Cordwainer Smith1
- Cornelius John Hauck1
- Cosimo de' Medici1
- Count Alexis de Golowkin1
- Couvent des pères Franciscains (Monte-Carlo, Monaco)1
- Cox Macro1
- Cristoferus Chrewczer1
- Curt H. Reisinger1
- D'Assonleville family1
- D. Justin McCann1
- Dame Margery Byrkenhed1
- Dana Hill1
- Daniele Florio1
- David Bickersteth Magee1
- David Swan1
- David Weinglass1
- Davis & Harvey1
- Dawson Turner1
- De Levis1