Former Owner
- Joseph May Spetzler1
- Joseph Mayner1
- Joseph Whitney1
- Josephine Widener Wichfield1
- Josh Miller1
- José Antonio Conde1
- Juan Antonio de la Reguera1
- Juan de Aillon1
- Juan de Torquemada1
- Julie Florence de Cossette1
- Julius Hess1
- Julius de Cardelinis1
- Justin MacCarthy Reagh1
- Jérôme Bignon1
- K-L1
- K. B. Starkie1
- Kartause Erfurt1
- Katheline Minnis1
- Katherine Petersen1
- Klaus Dieter Dahmen1