- Hagiography1
- Hanbalites1
- Henry IV, King of Castile and Leon, 1425-14741
- Heraldry1
- Hilarion, Saint, approximately 291-approximately 3711
- Historia de regibus Gothorum, Vandalorum, et Suevorum (Isidore, of Seville, Saint)1
- Historiography1
- History of Biblical events1
- History, Military1
- Hospitals1
- House of Burgundy, 1384-14771
- Hungary1
- Ibn Mālik, Muḥammad ibn ʻAbd Allāh, -1274. Sharḥ al-Kāfiyah al-shāfiyah1
- Illumination of books and manuscripts, French1
- Indexes1
- Inheritance and succession (Islamic law)1
- Initials (Abbreviations)1
- Ink stamps1
- Innocent VIII, Pope, 1432-14921
- Iran1