Former Owner
- J. Paul Getty Museum1
- J. T. Payne1
- Jacques Rosenthal1
- James Albert FitzSimmons1
- James C. Byrne1
- James Dyer1
- James Melville Hunnewell1
- Jean II de Croÿ1
- Jean Joseph Sosthène de LaRoche Lacarelle1
- Jean-Baptiste Huzard1
- Joachim Guerrinus de Montefegatesio1
- John Edgar Ker1
- John Frederick Lewis1
- John Henry Nash1
- John Hunt1
- John Lee1
- John Roland Abbey1
- John Rolls, 1st Baron Llangattock1
- John Ruskin1
- Juan Burgueño1