Former Owner
- Buxheim Charterhouse1
- Camillo Riccio1
- Carleton Rubira Richmond1
- Carlo Archinto, 2nd Marquess of Parona, 3rd Count of Trainate1
- Carlo Francesco Frasconi1
- Carlo Morbio1
- Catharine Wisser1
- Champmol1
- Charles Brodrick1
- Charles D. Humberd1
- Charles Eliot Norton1
- Charles Stuart, 1st Baron Stuart de Rothesay1
- Charles William Dyson Perrins1
- Charles-Gilbert Morel de Vindé1
- Church of St James, Sarsden1
- Clarence Howard Clark, Sr.1
- Claude Le Muet1
- Clemente Carilli1
- Coella Lindsay Ricketts1
- Cologne Charterhouse1