- Iraq--ʻAmādīyah3
- Ireland3
- Iron mines and mining1
- Irshād al-adhhān ilá aḥkām al-īmān (Ibn al-Muṭahhar al-Ḥillī, al-Ḥasan ibn Yūsuf)4
- Isaac (Biblical patriarch)1
- Isabella I, Queen of Spain, 1451-15044
- Isagoge (Porphyry)2
- Isaiah (Biblical prophet)1
- Isbījābī, Aḥmad ibn Manṣūr, -approximately 1087. Sharḥ al-Mukhtaṣar fī al-fiqh1
- Ise monogatari1
- Isfarāyīnī, Muḥammad ibn Muḥammad, -1285. al-Lubāb fī ʻilm al-iʻrāb1
- Isfarāyīnī, Muḥammad ibn Muḥammad, -1285. Ḍawʼ al-Miṣbāḥ3
- Isfarāyīnī, Muḥammad ibn Muḥammad, d. 1285. Lubāb al-iʻrāb1
- Ishrāqīyah1
- Ishārāt wa-al-tanbīhāt (Avicenna)3
- Islam123
- Islam and philosophy1
- Islam and politics3
- Islam--Apologetic works2
- Islam--Customs and practices52