Former Owner
- John William Bradley1
- John William Burns1
- John William Harshberger1
- John Willis1
- John Wright1
- John de Cinque1
- John de Vere, 12th Earl of Oxford1
- Jonathan Peckover1
- Josceline Bagot1
- Joseph Baer & Co.1
- Joseph Barrois22
- Joseph E. Widener8
- Joseph François René de Kergariou1
- Joseph Görres1
- Joseph Halle Schaffner1
- Joseph Jekyll1
- Joseph L. Lilly1
- Joseph Marie Sormani1
- Joseph May Spetzler1
- Joseph Pope3