Former Owner
- Giuseppe Martini15
- Giusto Venier1
- Gladbach Abbey1
- Gloucester Cathedral1
- Godefroy Honore1
- Goodspeed's Book Shop2
- Gordon A. Block Junior2
- Gotha Research Library1
- Grabhorn Press1
- Great St. Martin Church1
- Grenville Kane1
- Grigorij Sergeevič Stroganov1
- Groenendael Priory1
- Grolier Club1
- Grosvenor, Richard1
- Gudrun Wandel62
- Guglielmo Libri Carucci dalla Sommaja21
- Guilberto Broulin1
- Guilelmus Laing1
- Guillaume Budé1