Former Owner
- John Boyd Thacher I2
- John Egerton, 1st Earl of Bridgewater2
- John Egerton, 2nd Earl of Bridgewater2
- John Egerton, 3rd Earl of Bridgewater2
- John Henry Wrenn2
- John III of Portugal2
- John Ives2
- John Lee2
- John Patrick Auguste Madden2
- John Roland Abbey2
- John Thomas Beer2
- John Topham2
- John Towneley2
- John Wright2
- Joseph Haslewood2
- Josephine Widener Wichfield2
- Kaikhusroo Minocher Jamaspasa2
- Karl F. Morrison2
- Kartause Erfurt2
- Karva, Lakṣmaṇabhaṭṭa2