- History, Ancient1
- Homage (Feudal law)1
- Horses1
- Hoskin, John, -approximately 13631
- Hoskins family1
- Hundred Years' War (1339-1453)1
- Ibn Nawbakht, Ibrāhīm, 10th cent. Yāqūt1
- Ibn Zaydūn, Aḥmad ibn ʻAbd Allāh, 1003 or 4-1071. Risālah al-hazalīyah1
- Ibn al-Fāriḍ, ʻUmar ibn ʻAlī, 1181 or 1182-1235. Tāʾīyah1
- Ikmāl (Ibn Mākūlā, ʻAlī ibn Hibat Allāh)1
- Imamate1
- Imams (Shiites)1
- Imām al-Ḥaramayn al-Juwaynī, ʻAbd al-Malik ibn ʻAbd Allāh, 1028-1085. Irshād ilá qawāṭiʻ al-adillah fī uṣūl al-iʻtiqād1
- Indulgences1
- Inheritance and succession (Islamic law)1
- Iran--Ardabīl1
- Iran--Iṣfahān1
- Iran--Sabzevār (Khurāsān-i Raz̤avī)1
- Iran--Shīrāz1
- Iraq--Erbil1