- Hymns, Ethiopic1
- Hymns, Latin1
- Iceland1
- Ildephonsus, Saint, approximately 610-6671
- Ildobrandini, Geronimo1
- Illumination of books and manuscripts, Flemish1
- Illumination of books and manuscripts, French1
- Illumination of books and manuscripts, Gothic1
- Illumination of books and manuscripts, Medieval1
- Illumination of books and manuscripts, Renaissance1
- Impediments to marriage1
- Innocent VIII, Pope, 1432-14921
- Interfaith relations1
- Italy--Ameglia1
- Italy--Ancona1
- Italy--Arezzo1
- Italy--Arezzo (Province)1
- Italy--Barberino di Val d'Elsa1
- Italy--Bologna1
- Italy--Bosco Marengo1