Former Owner
- John Savile1
- John Thomas Beer1
- Joseph Halle Schaffner1
- Joseph L. Lilly1
- Joseph Pope1
- Joseph-Félix Allard1
- Juan Burgueño1
- Juan de Gayferos de Eguiraum1
- Juana I of Castile1
- Judah ben Moses, ha-Rofe, ha-Kohen1
- Julian Burgueño1
- Jérôme Bignon1
- Kloster Rebdorf1
- Lady Frances Bentinck1
- Lajos Graf Apponyi de Nagy-Appony1
- Lambach Abbey1
- Lathrop C. Harper, Inc.1
- Lathrop Colgate Harper1
- Laurence Claiborne Witten II1
- Laurence Kirby1