Former Owner
- Jacques Vellekoop1
- James Bowen1
- James R. Herbert Boone1
- James Sotheby1
- James Stevens-Cox1
- James Turle1
- Jay Gould1
- Jean-Frédéric Waldeck1
- Jezzar Pasha1
- Jo. Otho1
- Joaquín Gómez de la Cortina1
- Johann Egolph1
- Johann von Firmian1
- John Alexander Stewart1
- John Bellingham Inglis1
- John Bulkeley1
- John Camp Williams1
- John D. Stanitz1
- John Eliot Hodgkin1
- John Fenn1