Former Owner
- John Dozier Gordan4
- John Eliot Hodgkin1
- John Fenn1
- John Frederick Lewis22
- John Henry Ellis1
- John Hinsdale Scheide2
- John Holt1
- John Ruskin1
- John Sidney Hawkins1
- John Sotheby1
- Joseph Anton Koch1
- Joseph Barrois3
- Joseph L. Lilly1
- Joseph Mayner1
- Juan Burgueño1
- Judith Lady Montefiore College1
- Julia Burgess4
- Julian Burgueño1
- Kenneth Hyde1
- Konrad von Maurer2