Former Owner
- House of Liechtenstein1
- House of Neville1
- House of Sforza2
- Howard Lehman Goodhart6
- Howard Lesnick1
- Howel Wills1
- Howell Wills1
- Hucks Gibbs, 1st Baron Aldenham1
- Huskan-ordi (Monastery in Muradiye, Turkey)1
- Ibrahim Sultan1
- Ibrāhīm al-Shakūrī1
- Ida M. Havens2
- Ignatius Molitor1
- Imre De Vegh2
- Institut für Orientalistik (Universität Wien)1
- Isabel de Bellusseau1
- Isabelle de Lévis1
- J. & J. Leighton1
- J. M. C. Armbruster (Firm)1
- J. Palmer1