Former Owner
- J. Paul Getty Museum1
- James K. Moffitt2
- James Lyell3
- Johann Heinrich van Ess2
- John Alexander Stewart1
- John D. Stanitz1
- John Frederick Lewis20
- John Ruskin1
- John Sotheby1
- Joseph Mayner1
- Juan Burgueño1
- Judith Lady Montefiore College1
- Julia Burgess4
- Julian Burgueño1
- Lancino Curti1
- Lawrence J. Schoenberg8
- Llewelyn Lloyd-Mostyn, 3rd Baron Mostyn of Mostyn1
- Lodovicus Saltariellus1
- Luis Fernández de Córdoba y Aragón1
- Madeleine Cosman1