Former Owner
- House of Bentivoglio1
- House of Colonna1
- House of Rucellai1
- House of Sforza1
- Hubert Palmer Greville1
- Hudson Gurney1
- Hugh Daubeney1
- Hugh Roberts1
- Hôtel Drouot1
- I. I. Zur-Mühlen1
- Ibrāhīmʹzādah Ismāʻīl Z̲ihnī1
- Ilyās ibn Yūsuf Nāʻimat1
- Imam Shamil1
- Irvine Masson1
- Ismāʻīl ibn Pīr Muḥammad Sarūrī1
- Ismāʻīl ibn al-Ḥājj ʻĪsá Jurayj al-Muhannā1
- J. A. Dortmond1
- J. Martini1
- J. Thomson1
- J.J. Middleton1