- Grassi, Carlo1
- Grazino, Jacopo di1
- Great Britain1
- Greece1
- Greece--Cephalonia (Municipality)1
- Greek language--Alphabet1
- Greek language--Grammar1
- Greek literature--Translations into Latin1
- Gregorian chants12
- Gregorian chants--Instruction and study1
- Gregorian chants--Manuscripts8
- Gregory I, Pope, approximately 540-6042
- Gregory XIII, Pope, 1502-15851
- Gritti, Andrea, 1455-15381
- Guardi, Gabriele1
- Guardian and ward7
- Guasconi, Pierantonio1
- Guelfo, Martino di1
- Guelfs and Ghibellines1
- Guglielmo, Antonio di1