- Henry II, King of Castile, 1333-13791
- Henry III, King of Castile and León, 1379-14061
- Henry III, King of France, 1551-15891
- Henry IV, King of France, 1553-16101
- Henry V, King of England, 1387-14221
- Henry VI, King of England, 1421-14711
- Henry VII, King of England, 1457-15091
- Henry VIII, King of England, 1491-15471
- Hepay, Peter de, 13th century1
- Herbs1
- Herbs--Therapeutic use1
- Hercules (Roman mythological character)1
- Hermes, Trismegistus1
- Hermetic philosophers1
- Hertford, Katherine Seymour, Countess of, 1540-15681
- Hezekiah ben David da Silva, 1659-1
- Hibah1
- Hieron I, Tyrant of Syracuse, -467 B.C. or 466 B.C.1
- High Holidays (Samaritan)1
- Hilarion, Saint, approximately 291-approximately 3711