- Ibn Saʻādah, Aḥmad ibn ʻAlī, active 13th century. Risālat al-ʻilm2
- Ibn al-ʻArabī, 1165-12402
- Intention--Religious aspects--Islam2
- Interest (Islamic law)2
- Interfaith relations2
- Iran--Iṣfahān2
- Islam--Terminology2
- Islamic cosmology2
- Islamic sermons, Arabic2
- Isra' and Mi`raj of the Prophet Muhammad2
- Iṣfahānī, Maḥmūd ibn ʻAbd al-Raḥmān, 1275 or 1276-1348 or 1349. Tasdīd al-qawāʼid fī sharḥ Tajrīd al-ʻaqāʼid2
- Jawī Zādah, Muḥammad ibn Ilyās, -1547 or 1548. Risālah fī al-masḥ ʻalá al-khuffayn2
- Judaism2
- Judgment Day (Islam)2
- Jurjānī, ʻAlī ibn Muḥammad, al-Sayyid al-Sharīf, 1340-14132
- Jurjānī, ʻAlī ibn Muḥammad, al-Sayyid al-Sharīf, 1340-1413. Ḥāshiyat al-Tajrīd2
- Lamaʻāt (ʻIrāqī, Fakhr al-Dīn Ibrāhīm)2
- Leather doublures2
- Libraries2
- Liquor laws (Islamic law)2