Former Owner
- Henry Wyndham, 2nd Baron Leconfield1
- Herbert B. Nichols1
- Hercules Silva1
- Herman Blum1
- Hermann Marx1
- Herschel V. Jones1
- House of Colonna1
- House of Sforza1
- Howard Lesnick1
- Hákon Snæbjörnson1
- I. I. Zur-Mühlen1
- Ibrāhīm al-Shakūrī1
- Ismāʻīl ibn al-Ḥājj ʻĪsá Jurayj al-Muhannā1
- J. A. Shanley1
- J.J. Middleton1
- Jacob Riegel1
- Jacques Annibal Claret de La Tourrette1
- Jacques Vellekoop1
- James C. Byrne1
- James Laurie1