Former Owner
- John Topham1
- John Wallop, Viscount Lymington3
- John Ward, 1st Earl of Dudley1
- John Wright1
- Joost Ritman1
- Joseph Anton Koch1
- Joseph Barrois6
- Joseph H. Haines1
- Joseph Haslewood2
- Joseph Henry Allen1
- Joseph Levitsky1
- Joseph Mayner1
- José Esteve Juan1
- José Fernando Ramírez1
- Juan de Iriarte y Cisneros1
- Judith Lady Montefiore College6
- Julien Peridier1
- Julius Heinrich Jeidels1
- Julius de Cardelinis1
- Jérôme Pichon1