Former Owner
- Giulio Saibante1
- Giuseppe Antonelli1
- Giuseppe Antonio Saccardini1
- Giuseppe Canonici1
- Giuseppe Franchini1
- Giusto Venier1
- Gladbach Abbey1
- Gladys Freeman1
- Gloucester Cathedral1
- Godajośī Dhātoṇḍa1
- Godefroy Honore1
- Gonthaut-Saint-Blanchard family1
- Gordon Adamson1
- Gotha Research Library1
- Grabhorn Press1
- Great St. Martin Church1
- Griffon's Medieval Manuscripts, Inc.1
- Grigorij Sergeevič Stroganov1
- Groenendael Priory1
- Grolier Club1