- Homage (Feudal law)1
- Homiliaries1
- Horses--Diseases1
- Hoskin, John, -approximately 13631
- Hoskins family1
- Hotelkeepers1
- Hotels1
- Hundred Years' War (1339-1453)1
- Hungary1
- Hygiene1
- Hymns, Latin1
- Hārūn al-Rashīd, Caliph, approximately 763-8091
- Ibn Taymīyah, ʻAbd al-Salām ibn ʻAbd Allāh, 1193 or 1194-1254 or 1255. Muḥarrar fī al-fiqh1
- Ibn al-Bārizī, Hibat Allāh ibn Najm al-Dīn, 1247-13381
- Ibn al-Nafīs, ʻAlī ibn Abī al-Ḥazm, 1210 or 1211-1288. Mūjaz fī al-ṭibb1
- Ibn al-Sāʻātī, Aḥmad ibn ʻAlī, 1254-1294 or 5. Majmaʻ al-baḥrayn wa-multaqá al-nayyirayn1
- Ikmāl (Ibn Mākūlā, ʻAlī ibn Hibat Allāh)1
- Illegitimacy1
- Illumination of books and manuscripts, French1
- Illumination of books and manuscripts, Italian1