Former Owner
- Jay Gould1
- Jean de Falloize1
- Jeremiah Styles1
- Jeronimus Maelens1
- Joannes Hainricus Ebron zu Wildenberg1
- Johan C. Jackson1
- Johannes de Helb1
- John Boykett Jarman1
- John Eliot Hodgkin1
- John Fletcher Hurst1
- John Harvey Treat1
- John Morgan1
- John Walker1
- Joseph Anton Koch1
- Joseph François René de Kergariou1
- Joseph Pope1
- José Fernando Ramírez1
- Julie Florence de Cossette1
- Kloster Kuringen1
- Laurence Claiborne Witten II1