Former Owner
- Holmcultram Abbey1
- 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
- Huskan-ordi (Monastery in Muradiye, Turkey)1
- Hôtel Drouot1
- I. I. Middleton1
- Ioannis Gennadios1
- Irvine Masson1
- Isabel de Bellusseau1
- Isabella d'Este1
- Israel Gollancz1
- J. & J. Leighton1
- J. A. J. Barclay1