Former Owner
- Girolamo d'Adda2
- Giuliano Attilio Piovano1
- Giulio Antonio Acquaviva1
- Giulio Saibante1
- Giuseppe Antonelli1
- Giuseppe Antonio Saccardini1
- Giuseppe Bruschetti2
- Giuseppe Canonici1
- Giuseppe Franchini1
- Giuseppe Martini24
- Giusto Venier1
- Gladbach Abbey1
- Gladys Freeman1
- Godajośī Dhātoṇḍa1
- Godefroy Honore1
- Gonthaut-Saint-Blanchard family1
- Goodspeed's Book Shop2
- Gordon A. Block Junior2
- Gotha Research Library1
- Great St. Martin Church1