Former Owner
- Henry Pelham-Clinton, 4th Duke of Newcastle1
- Henry White1
- Herne Charterhouse1
- Hodgson & Co.1
- Hooker Wix1
- Isabel d'Oyembrugge de Duras1
- J. & J. Leighton1
- J. Marstili1
- Jacob Dackomb1
- Jacqueline du Pré1
- James & Mary Lee Tregaskis (Firm)1
- Jean-Baptiste Denis Guyon de Sardière1
- Jean-Louis Girardin de Vauvré1
- Jeannette Piccard1
- Jeremiah Styles1
- Jeronimus Maelens1
- Joachim Guerrinus de Montefegatesio1
- Joachim, Baron von Windhag1
- John Boykett Jarman1
- John Dozier Gordan1