- Iqnāʼ (Ḥujāwī, Mūsá ibn Aḥmad)3
- Iraq--Baghdad3
- Isfarāyīnī, Muḥammad ibn Muḥammad, -1285. Ḍawʼ al-Miṣbāḥ3
- Islam--Prayers and devotions3
- Islamic astrology3
- Islamic heresies3
- Islamic interpretations of Jesus Christ3
- Islamic interpretations of sacred works3
- Islamic literature, Arabic3
- Israel--Acre3
- Jaʻbarī, Ibrāhīm ibn ʻUmar, 1242 or 1243-1331 or 1332. Wāḍiḥah fī tajwīd al-Fātiḥah3
- Jurjānī, ʻAlī ibn Muḥammad, al-Sayyid al-Sharīf, 1340-1413. Sharḥ khuṭbah al-Quṭbīyah3
- Jurjānī, ʻAlī ibn Muḥammad, al-Sayyid al-Sharīf, 1340-1413. Ḥāshiyah ʻalá Lawāmiʻ al-asrār3
- Kaydānī. Fiqh al-Kaydānī3
- Khabbāzī, ʻUmar ibn Muḥammad, 1231 or 2-1292. Mughnī fī uṣūl al-fiqh3
- Khiḍr (Legendary character)3
- Kinship (Islamic law)3
- Kāshī, Yaḥyá ibn Aḥmad. Qarah ḥāshiyah3
- Lamaʻāt (ʻIrāqī, Fakhr al-Dīn Ibrāhīm)3
- Legacies (Islamic law)3