Former Owner
- Howard Gray1
- Howel Wills1
- Howell Wills1
- Hugh Roberts1
- Ibrāhīm al-Shakūrī1
- Ioannēs Grēgoropoulos1
- Irvine Masson1
- Ismāʻīl ibn al-Ḥājj ʻĪsá Jurayj al-Muhannā1
- Israel Gollancz1
- J. & J. Leighton1
- J. A. Shanley1
- J. Marstili1
- J. Meade Falkner1
- J. Palmer1
- Jacqueline du Pré1
- Jacques Rosenthal1
- James K. Moffitt1
- James Laurie1
- James Lyell1
- James Stevens-Cox1