- Henry IV, King of Castile and Leon, 1425-14742
- Hermetism2
- Hinduism--Doctrines2
- Historiography2
- History--Philosophy2
- Horsemanship--Equipment and supplies2
- Horses2
- Human anatomy2
- Humor2
- Hundred Years' War (1339-1453)2
- Hus, Jan, 1369?-14152
- Hygiene2
- Hymns, Hebrew2
- Hymns, Latin (Medieval and modern)2
- Hymns, Syriac2
- Ibn Nujaym, Zayn al-Dīn ibn Ibrāhīm, -1563. Ṣaghāʼir wa-al-kabāʼir2
- Ibn Qaḍīb al-Bān, ʻAbd Allāh ibn Muḥammad, -1684 or 1685. Dālīyah2
- Ibn Saʻādah, Aḥmad ibn ʻAlī, active 13th century. Risālat al-ʻilm2
- Ibn al-Hāʼim, Aḥmad ibn Muḥammad, -1412. Lumaʻ al-yasīrah fī ʻilm al-ḥisāb2
- Ibn al-Muqrī, Ismāʻīl ibn Abī Bakr, 1354-1433 or 1434. Rawḍ al-ṭālib2