- Homage (Feudal law)1
- Horace1
- Horoscopes1
- Horses--Diseases1
- Horticulture1
- Hoskin, John, -approximately 13631
- Hoskins family1
- Hospitals1
- Hugh, of Fouilloy, -1172 or 1173. De medicina animae1
- Hugh, of Lincoln, Saint, 1140-12001
- Humanism1
- Humanistic ethics1
- Humanity of Jesus Christ1
- Hungary1
- Hymns, German1
- Hymns, Latin1
- Illumination of books and manuscripts, French1
- Illumination of books and manuscripts, Gothic1
- Illumination of books and manuscripts, Renaissance1
- Impediments to marriage1