- Ibn Wahbān, ʻAbd al-Wahhāb ibn Aḥmad, -1366 or 1367. Qaʼid al-sharāʼid wa-naẓm al-fawāʼid1
- Ibn Zaydūn, Aḥmad ibn ʻAbd Allāh, 1003 or 1004-1071. Risālah al-jiddīyah1
- Ibn al-Bārizī, Hibat Allāh ibn Najm al-Dīn, 1247-13381
- Ibn al-Fāriḍ, ʻUmar ibn ʻAlī, 1181 or 1182-12351
- 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 al-Qānūn fī al-ṭibb1
- Ibn al-Nāẓim, Muḥammad ibn Muḥammad, -1287 or 1288. Sharḥ Alfīyat Ibn Mālik1
- Ibn al-Shahīd al-Thānī, al-Ḥasan, 1551 or 1552-1602 or 1603. Maʻālim al-dīn wa-malādh al-mujtahidīn1
- Ibn al-Shahīd al-Thānī, al-Ḥasan, 1551 or 1552-1602 or 1603. Maʻālim al-dīn wa-malādhdh al-mujtahidīn1
- Ibn al-ʻArabī, 1165-1240. Ḥikam al-ilāhīyah1
- Ibn ʻAllān, Muḥammad ʻAlī ibn Muḥammad, 1588-1648. Ḍawābiṭ al-taqṭīʻ1
- Ibn ʻArūs, Aḥmad, -1463 or 1464. Qaṣīdah1
- Ibn Ḥajar al-Haythamī, Aḥmad ibn Muḥammad, approximately 1503-approximately 1566. Tuḥfat al-muḥtāj bi-sharḥ al-Minhāj1
- Ibn Ḥajar al-ʻAsqalānī, Aḥmad ibn ʻAlī, 1372-1449. Nuzʹhat al-naẓar fī tawḍīḥ Nukhbat al-fikar1
- Ijmāʻ (Islamic law)1
- Ijtihād (Islamic law)1
- Illumination of books and manuscripts1
- Illumination of books and manuscripts, Gothic1
- Imams (Shiites)1
- Immortality--Islam1