- Ibn Nawbakht, Ibrāhīm, active 10th century. Yāqūt fī ʻilm al-kalām1
- Ibn Qutaybah, ʻAbd Allāh ibn Muslim, 828-889? Adab al-kātib1
- Ibn Sharaf Shāh, Ḥasan ibn Muḥammad, 1247 or 1248-1315 or 1316. Wāfīyah fī sharḥ al-Kāfīyah1
- Ibn al-Aswad, Ḥasan ibn ʻAlāʼ al-Dīn. Iftitāḥ1
- Ibn al-Hāʼim, Aḥmad ibn Muḥammad, -1412. Lumaʻ al-yasīrah fī ʻilm al-ḥisāb1
- Ibn al-Hāʼim, Aḥmad ibn Muḥammad, d. 1412. Tuḥfat al-ṭullāb1
- Ibn al-Khabbāz, Aḥmad ibn al-Ḥusayn, 1193-1240. Kifāyah fī al-naḥw1
- Ibn al-Muqrī, Ismāʻīl ibn Abī Bakr, 1354-1433 or 1434. Badīʻīyah1
- Ibn al-Nafīs, ʻAlī ibn Abī al-Ḥazm, 1210 or 1211-1288. Mūjiz1
- Ibn al-Nafīs, ʻAlī ibn Abī al-Ḥazm, 1210 or 1211-1288. Mūjiz al-Qānūn1
- Ibn al-ʻArabī, 1165-12401
- Ibn al-ʻImād al-Aqfahsī, Aḥmad, approximately 1349-1405. Manẓūmah fī al-najāsāt al-maʻfū ʻanhā1
- Ibn al-Ḥājib, ʻUthmān ibn ʻUmar, 1175-1249. Shāfiyah fī al-taṣrīf1
- Ibn al-ḥajj, ḥamdūn ibn ʻAbd al-Raḥmān, 1760-1817. Maqṣūrah fī ʻilmay al-ʻarūḍ wa-al-qawāfī1
- Ibn ʻAqīl, ʻAbd Allāh ibn ʻAbd al-Raḥmān, 1294?-1367. Sharḥ al-Alfīyah1
- Ibn Ḥijjah al-Ḥamawī, Taqī al-Dīn Abū Bakr ibn ʻAlī, -1434. Badīʻīyah1
- Ijtihād (Islamic law)1
- Illumination of books and manuscripts, Iranian1
- Illuminations (paintings)1
- Ilāhʹābādī, ʻAbd Allāh ibn Shihāb. Sharḥ ʻalá ḍābiṭat sharāʼiṭ al-ashkāl al-arbaʻah li-Tahdhīb al-manṭiq1