- Glue1
- God (Christianity)--History of doctrines1
- Gothic (Medieval)1
- Grace (Theology)1
- Graham, Patrick Graham, Lord, -14661
- Grammar, Comparative and general1
- Greek letters1
- Greek literature1
- Gregory I, Pope, approximately 540-6041
- Gregory IX, Pope, approximately 1170-12411
- Half bindings1
- Heraldry1
- Hermits1
- Hilarion, Saint, approximately 291-approximately 3711
- Historiography1
- Hospitals1
- House furnishings1
- Hugh, of Fouilloy, -1172 or 1173. De medicina animae1
- Humanistic ethics1
- Humanists1