- Gondi, Simone1
- Grammar, Comparative and general1
- Greece--Corfu Island1
- Greek language--Grammar1
- Greek letters1
- Greek literature1
- Gregorian chants--Instruction and study1
- Guelfs and Ghibellines1
- Gurrea Pelliparinus, Johannes de1
- Gynecology1
- Hagiography1
- Hagiography in literature1
- Happiness1
- Head--Wounds and injuries1
- Heart--Diseases1
- Henry IV, King of Castile and Leon, 1425-14741
- Henry V, King of England, 1387-14221
- Heresy1
- Hieron I, Tyrant of Syracuse, -467 B.C. or 466 B.C.1
- Hilarion, Saint, approximately 291-approximately 3711