- Hunting customs1
- Hybrid books1
- Hymns, Latin1
- Ildobrandini, Geronimo1
- Illegible markings1
- Illumination of books and manuscripts, Renaissance1
- Illustrated works1
- Ink stamps1
- Innocent III, Pope, 1160 or 1161-12161
- Innocent VIII, Pope, 1432-14921
- Ireland1
- Isabel, of Coimbra, Queen, consort of Afonso V, King of Portugal, 1432-14551
- Isaiah (Biblical prophet)1
- Islam1
- Italian rotunda (script)1
- Italy--Abbiategrasso1
- Italy--Ancona1
- Italy--Arezzo1
- Italy--Barberino di Val d'Elsa1
- Italy--Bergamo1