Former Owner
- Herbert Watney1
- Hercules Silva1
- Herman Cohen1
- Hieronymus Wilhelm Ebner von Eschenbach1
- Himmerod Abbey1
- Holmcultram Abbey1
- Holt family1
- House of Bentivoglio1
- House of Colonna1
- House of Neville1
- House of Strozzi1
- Hubert Palmer Greville1
- Hugh Roberts1
- Hugo Philipp Waldbott-Bassenheim1
- I. I. Middleton1
- Ibrāhīm al-Shakūrī1
- Ignatius Molitor1
- Institut für Orientalistik (Universität Wien)1
- Ioannis Gennadios1
- Ioannēs Grēgoropoulos1