Former Owner
- Great St. Martin Church1
- Grenville Kane2
- Groenendael Priory1
- Grosvenor, Richard1
- Gudrun Wandel1
- Guglielmo Libri Carucci dalla Sommaja8
- Guilielmus van Hamme1
- Gundulf1
- Gustavo Camillo Galletti1
- H. Bayle1
- H. Charles Barnston1
- H. P. Kraus (firm)6
- Hadi Kashif al-Ghita1
- Hagop Kevorkian Fund1
- Hamon Styleman Le Strange1
- Hans P. Kraus1
- Harff, Irmengarde von1
- Harrison Horblit5
- Harry C. Koenig2
- Harry Creswick2