- Greek language--Grammar2
- Greek letters2
- Greek literature3
- Greek literature--Translations into Latin1
- Gregorian chants32
- Gregorian chants--Manuscripts10
- Gregory I, Pope, approximately 540-6042
- Gregory IX, Pope, approximately 1170-12411
- Grisaille painting1
- Griselda (Legendary character)1
- Guardian and ward2
- Gucciarelli, Buongiuliano de1
- Guelfi, Martino1
- Guelfo, Martino di1
- Guelfs and Ghibellines1
- Guidalotti, Antonia1
- Guido, Jacopo di1
- Guido, Pietro di1
- Guido, d'Arezzo1
- Guidoni, Luigi1