- Hospital care2
- Housing2
- Huguenots2
- Human anatomy2
- Humor2
- Hundred Years' War (1339-1453)2
- Hus, Jan, 1369?-14152
- Hussites2
- Hygiene2
- Hymns, Ethiopic2
- Ibn al-Hāʼim, Aḥmad ibn Muḥammad, -1412. Lumaʻ al-yasīrah fī ʻilm al-ḥisāb2
- Ibn al-Nafīs, ʻAlī ibn Abī al-Ḥazm, 1210 or 1211-1288. Mūjaz fī al-ṭibb2
- Ibn al-Nāẓim, Muḥammad ibn Muḥammad, d. 1287 or 8. Sharḥ al-Alfīyah2
- Illegitimacy2
- Illumination of books and manuscripts, Flemish2
- Illumination of books and manuscripts, German2
- Illusion (Philosophy)2
- Imams (Shiites)--Biography2
- Immortality2
- Imāmʹzādah, Muḥammad ibn Abī Bakr, 1097 or 1098-1177 or 1178. Shirʻat al-Islām2