- Human anatomy1
- Ibn Amīn al-Dawlah, al-ʻAfīf, active 15th century. Lamḥah al-ʻAfīfīyah fī al-ṭibb1
- Ibn Mālik, Muḥammad ibn ʻAbd Allāh, -1274. Iʻjāz al-taʻrīf fī ʻilm al-taṣrīf1
- Ibn Mālik, Muḥammad ibn ʻAbd Allāh, -1274. Sharḥ al-Kāfiyah al-shāfiyah1
- Ibn al-Fāriḍ, ʻUmar ibn ʻAlī, 1181 or 1182-1235. Tāʼīyah1
- Ibn al-Murtaḍá, Aḥmad ibn Yaḥyá, 1363-1437. Miʻyār al-ʻuqūl fī ʻilm al-uṣūl1
- Ibn al-Nafīs, ʻAlī ibn Abī al-Ḥazm, 1210 or 1211-1288. Mūjiz1
- Ibn al-Ḥabbāk, Muḥammad ibn Aḥmad, d. 1462 or 3. Bughyat al-ṭullāb fī ʻilm al-asṭurlāb1
- Ibn Ḥijjah al-Ḥamawī, Taqī al-Dīn Abū Bakr ibn ʻAlī, -1434. Badīʻīyat1
- Indulgences1
- Inheritance and succession (Islamic law)1
- Investiture (Feudal law)1
- Iran--Dizfūl1
- Iran--Sabzevār (Khurāsān-i Raz̤avī)1
- Iraq1
- Iraq--Baghdad1
- Isabella I, Queen of Spain, 1451-15041
- Ishārāt wa-al-tanbīhāt (Avicenna)1
- Islamic calendar1
- Islamic cosmology1