Former Owner
- Giulio Antonio Acquaviva1
- Giulio Saibante1
- Giuseppe Antonio Saccardini1
- Giuseppe Canonici1
- Giusto Venier1
- Gladys Freeman1
- Godefroy Honore1
- Gonthaut-Saint-Blanchard family1
- Goodspeed's Book Shop1
- Gordon A. Block Junior1
- Grabhorn Press1
- Griffon's Medieval Manuscripts, Inc.1
- Groenendael Priory1
- Grolier Club1
- Guilberto Broulin1
- Guilelmus Laing1
- Guillaume Budé1
- Guillemette Bezard1
- Gustav Wolf1
- Gusztáv Emich1