Former Owner
- Jean Bondieu1
- Jean François de Kerchove, Heer van Etikhove, La Deuze, Champagne, Vaulx1
- Jehanne Seigneau1
- Johan Meerman1
- Johann von Firmian1
- Johannes Wesbach1
- Johannes, de Sancto Nabore1
- John Alfred Wigan1
- John Bellingham Inglis1
- John Couch Adams1
- John Gribbel1
- John Harrison-Broadley1
- John Hirst1
- John Hope, 1st Marquess of Linlithgow1
- John Ingle Dredge1
- John Jalkyn1
- John Shelton Lawrence1
- John Stirton1
- John Trotter Brockett1
- Jonathan Peckover1