Former Owner
- Henry Wyndham, 2nd Baron Leconfield1
- Henry Yates Thompson1
- Hospital de Jesús Nazareno1
- House of Venier1
- I. B. Richards1
- I. C.1
- J. & J. Leighton1
- Jacob Winsor1
- Jacobus de Muffoni1
- Johan Gröf1
- Johannes zu Reitheim1
- John Alexander Stewart1
- John Barrymore1
- John Burns1
- John Carter1
- John Dare1
- John Egylsfelld1
- John Eliot Hodgkin1
- John Fenn1
- John Ives1