Former Owner
- John Butlar1
- John C. Jackson1
- John Camp Williams1
- John Church1
- John D. Stanitz13
- John E. Burton1
- John Edgar Ker1
- John Frederick Lewis86
- John Hinely1
- John Lee1
- John Roland Abbey1
- John Ruskin1
- John Sotheby1
- John Thomas Beer1
- John Ward, 1st Earl of Dudley1
- Joseph Barrois2
- Juan Burgueño1
- Judith Lady Montefiore College6
- Julian Burgueño1
- Julius de Cardelinis1