Former Owner
- John Payne Collier1
- John Walker1
- Joseph Barrois1
- Joseph Mayner1
- Joseph Pope1
- Juan de Londono1
- Justin MacCarthy Reagh1
- Jón Þorstensson1
- Kang Youwei1
- Kloster Kuringen1
- Lambach Abbey1
- Laurent Campagne1
- Legoué1
- Leo Olschki1
- Lisa Norris Elkins1
- Louis César de La Baume Le Blanc1
- Louis XIV of France1
- Lucien Gougy1
- Luigi Celotti1
- Luigi Serra di Cassano1