Former Owner
- 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
- Grosvenor, Richard1
- Guilberto Broulin1
- Guilelmus Laing1
- Guillaume Budé1
- Guillemette Bezard1
- Guillemme Broullin1
- Gundulf1