- Ibn Umayl, Muḥammad, active 10th century. Qaṣīdah al-Nūnīyah1
- Ibn Wadʻān, Muḥammad ibn ʻAlī, d. 1101. Arbaʻīn al-Wadʻānīyah1
- Ibn Wahbān, ʻAbd al-Wahhāb ibn Aḥmad, d. 1366 or 7. Qayd al-sharāʼid1
- Ibn al-Hāʼim, Aḥmad ibn Muḥammad, -1412. Lumaʻ al-yasīrah fī ʻilm al-ḥisāb1
- Ibn al-Hāʼim, Aḥmad ibn Muḥammad, -1412. Tuḥfah al-qudsīyah fī al-farāʼiḍ1
- Ibn al-Hāʼim, Aḥmad ibn Muḥammad, d. 1412. Nuzhah fī al-ḥisāb1
- Ibn al-Maghribī, ʻAlī. Manẓūmah fī al-ʻuqūd1
- Ibn al-Muṭahhar al-Ḥillī, al-Ḥasan ibn Yūsuf, 1250-1325. Mabādiʼ al-wuṣūl ilá ʻilm al-uṣūl1
- Ibn al-Nafīs, ʻAlī ibn Abī al-Ḥazm, 1210 or 1211-1288. Mūjaz fī al-ṭibb1
- Ibn al-Nafīs, ʻAlī ibn Abī al-Ḥazm, 1210 or 1211-1288. Mūjiz al-Qānūn1
- Ibn al-Nafīs, ʻAlī ibn Abī al-ḥazm, 1210 or 11-1288. Mūjiz al-Qānūn1
- Ibn al-Nāẓim, Muḥammad ibn Muḥammad, d. 1287 or 8. Sharḥ al-Alfīyah1
- Ibn al-Shahīd al-Thānī, al-Ḥasan, 1551 or 1552-1602 or 1603. Maʻālim al-dīn wa-malādhdh al-mujtahidīn1
- Ibn al-Sharīf al-Jurjānī, Muḥammad ibn ʻAlī, -1434 or 1435. Ghurrah fī al-manṭiq1
- Ibn al-ʻArabī, 1165-12401
- Ibrāhīm ibn Adʹham, -approximately 7771
- Idra zuta1
- Ijtihād (Islamic law)1
- Illumination of books and manuscripts, Arab1
- Imamate1