Former Owner
- John Cochran1
- John D. Stanitz3
- John Edgar Ker1
- John Egylsfelld1
- John Fenn1
- John Frederick Lewis22
- John Lumley, 1st Baron Lumley1
- John Sidney Hawkins1
- John Taylor1
- John Topham1
- Joseph Barrois1
- Joseph Haslewood1
- Joseph Mayner1
- Joseph Pulilo1
- Joseph-Félix Allard3
- José Antonio Conde1
- Juan de Iriarte y Cisneros1
- Julia Burgess1
- Justin MacCarthy Reagh2
- Katherine Somerset Wyttenbach Fenwick8