- Greek language--Alphabet1
- Greek language--Grammar2
- Greek literature1
- Greek literature--Translations into Latin1
- Greek style bindings1
- Gregorian chants43
- Gregorian chants--Manuscripts31
- Gregory I, Pope, approximately 540-6042
- Gregory XIII, Pope, 1502-15854
- Grief--Religious aspects--Islam1
- Grifoni, Antonio de'1
- Grifoni, Michele de'1
- Grigor, Tatʻevatsʻi, Saint, 1346-14091
- Griselda (Legendary character)1
- Gritti, Andrea, 1455-15381
- Grossa, Dora active 16th century1
- Gr̥hyasutras1
- Guanzi (Guan, Zhong)1
- Guardi, Gabriele1
- Guardian and ward8