Former Owner
- Holt family1
- House of Bentivoglio1
- House of Colonna1
- House of Neville1
- House of Strozzi1
- Hubert Palmer Greville1
- Hudson Gurney1
- Hugh Roberts1
- Hugo Philipp Waldbott-Bassenheim1
- I. I. Middleton1
- Ibrāhīm al-Shakūrī1
- Ignatius Molitor1
- Institut für Orientalistik (Universität Wien)1
- Ioannis Gennadios1
- Ioannēs Grēgoropoulos1
- Irvine Masson1
- Isaac ha-Rofe ben Moses ibn Elezar1
- Isabel de Bellusseau1
- Isabella d'Este1
- Israel Gollancz1