- Hebrew alphabet1
- Hell--Buddhism1
- Henry I, King of Castile, 1204-12171
- Henry II, King of Castile, 1333-13791
- Henry III, King of Castile and León, 1379-14061
- High Holidays--Liturgy1
- Ibrāhīm ibn Adʹham, -approximately 7771
- Illumination of books and manuscripts, Thai1
- In Coena Domini bulls1
- India--Assam1
- India--Cochin1
- Inscriptions, Latin1
- Iran--Iṣfahān1
- Iran--Tabrīz1
- Isidore, of Seville, Saint, -6361
- Islam--Prayers and devotions1
- Islamic calligraphy1
- Islamic countries1
- Islamic magic1
- Islamic painting1