- Ibn al-Jarādiqī, Muḥammad ibn ʻAlī, approximately 1373-14571
- Ibn al-Nafīs, ʻAlī ibn Abī al-Ḥazm, 1210 or 1211-1288. Mūjaz fī al-ṭibb1
- Ibn ʻUmrān, Muḥammad ibn Mūsá, 1392-14691
- Ibn Ḥajar al-Haythamī, Aḥmad ibn Muḥammad, approximately 1503-approximately 1566. Tuḥfat al-muḥtāj bi-sharḥ al-Minhāj1
- Ikmāl (Ibn Mākūlā, ʻAlī ibn Hibat Allāh)1
- Illegitimacy1
- Illinois--Chicago1
- Iran1
- Iran--Iṣfahān1
- Iran--Shīrāz1
- Iraq--Erbil1
- Isagoge (Porphyry)1
- Islamic calendar1
- Islamic etiquette1
- Islamic heresies1
- Islamic learning and scholarship1
- Islamic poetry, Arabic1
- Isnawī, ʻAbd al-Raḥīm ibn al-Ḥasan, 1305-13701
- Israel--Acre1
- Israel--Tsefat1