- Ibn Wahbān, ʻAbd al-Wahhāb ibn Aḥmad, -1366 or 1367. Qaʼid al-sharāʼid wa-naẓm al-fawāʼid1
- Ibn al-Muqrī, Ismāʻīl ibn Abī Bakr, 1354-1433 or 1434. Badīʻīyah1
- Ibn al-Nafīs, ʻAlī ibn Abī al-Ḥazm, 1210 or 1211-1288. Mūjaz fī al-ṭibb1
- Ibn al-Nāẓim, Muḥammad ibn Muḥammad, -1287 or 1288. Sharḥ Alfīyat Ibn Mālik1
- Ibn al-Sarrāj, Aḥmad ibn Abī Bakr, active 14th century1
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- Iran--Qazvīn1
- Isbījābī, Aḥmad ibn Manṣūr, -approximately 1087. Sharḥ al-Mukhtaṣar fī al-fiqh1
- Islam and politics1
- Islam--Theology1
- Islamic learning and scholarship1
- Islamic poetry1
- Islamic sects1
- Islamic sermons, Arabic1
- Jaʻbarī, Ibrāhīm ibn ʻUmar, 1242 or 1243-1331 or 1332. Wāḍiḥah fī tajwīd al-Fātiḥah1
- Judgment Day (Islam)1
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- Kashshāf (Zamakhsharī, Maḥmūd ibn ʻUmar)1
- Kaʻbah (Mecca, Saudi Arabia)1