- Henry III, King of Castile and León, 1379-14061
- Henry III, King of France, 1551-15891
- Henry IV, King of Castile and Leon, 1425-14747
- Henry V, King of England, 1387-14221
- Heraldry18
- Herbals2
- Herbs--Therapeutic use1
- Hermeneutics1
- Hermetism1
- Hermits5
- Heroides (Ovid)1
- Hieronymites2
- High Holidays--Liturgy1
- Hilarion, Saint, approximately 291-approximately 3711
- Hindu hymns1
- Hindu literature1
- Hindu saints1
- Hinduism--Sacred books1
- Historia de regibus Gothorum, Vandalorum, et Suevorum (Isidore, of Seville, Saint)1
- Historiated initials1