Former Owner
- Joannes Angelus de Crema1
- Joaquín García Icazbalceta1
- Johann Egolph1
- Johann Heinrich von Speyr-Passavant1
- Johann von Firmian1
- John Burns1
- John C. Jackson1
- John Eliot Hodgkin1
- John Fenn1
- John Haskell Shedd1
- John Hinsdale Scheide1
- John Paget1
- John Payne Collier1
- John Shelton Lawrence1
- John Sotheby1
- John Thomas Beer1
- Joseph Anton Koch1
- Joseph Ernst Koch-Sternfeld1
- Joseph Franz Gross1
- Joseph Halle Schaffner1