- Henry V, King of England, 1387-14221
- Herbals1
- Hercules (Roman mythological character)1
- Heresy1
- Hieron I, Tyrant of Syracuse, -467 B.C. or 466 B.C.1
- Hilarion, Saint, approximately 291-approximately 3711
- Historia de regibus Gothorum, Vandalorum, et Suevorum (Isidore, of Seville, Saint)1
- Historiography1
- History, Military1
- Holy Shroud1
- Holy Spirit1
- Holy Week services1
- Homage (Feudal law)1
- Horticulture1
- Hospitals1
- House furnishings1
- Hugh, of Fouilloy, -1172 or 1173. De medicina animae1
- Human reproduction1
- Humanistic ethics1
- Humanists1