Former Owner
- Johann von Firmian1
- Johannes Betrus Ravenoldus1
- John B. Stetson Jr.1
- John C. Jackson1
- John Henry Nash1
- John Hinsdale Scheide1
- John Roland Abbey1
- John Ruskin1
- John Shelton Lawrence1
- John Thomas Beer1
- Joost Ritman1
- Joseph Anton Koch1
- Joseph Pope1
- Joseph Pulilo1
- Juan Antonio de la Reguera1
- Judith Lady Montefiore College1
- Julius Heinrich Jeidels1
- Justin MacCarthy Reagh1
- Jérôme Pichon1
- Katherine Somerset Wyttenbach Fenwick1