- Isfarāyīnī, Muḥammad ibn Muḥammad, -1285. Ḍawʼ al-Miṣbāḥ1
- Islam and philosophy1
- Islam--Functionaries1
- Islam--Prayers and devotions1
- Islamic bindings1
- Islamic eschatology1
- Islamic learning and scholarship1
- Islamic magic1
- Islamic occultism1
- Islamic religious education1
- Italy--Sicily1
- Iʻrāb ʻan qawāʻid al-iʻrāb (Ibn Hishām, ʻAbd Allāh ibn Yūsuf)1
- Iḥyāʼ ʻulūm al-dīn (Ghazzālī)1
- Iṣfahānī, Maḥmūd ibn ʻAbd al-Raḥmān, 1275 or 1276-1348 or 1349. Maṭāliʻ al-anẓār1
- Iṣfahānī, Maḥmūd ibn ʻAbd al-Raḥmān, 1275 or 1276-1348 or 1349. Tashyīd al-Qawāʻid1
- Jaghmīnī, Maḥmūd ibn Muḥammad, -1221?1
- Jamʻ al-jawāmiʻ fī al-uṣūl (Subkī, Tāj al-Dīn ʻAbd al-Wahhāb ibn ʻAlī)1
- Jews1
- Jighmīnī, Maḥmūd ibn Muḥammad, -1221? Mulakhkhaṣ fī al-hayʼah1
- John, of Daylam1