- Ibn Taymīyah, Aḥmad ibn ʻAbd al-Ḥalīm, 1263-1328. Jawāmiʻ al-kalim1
- Ibn al-Hāʼim, Aḥmad ibn Muḥammad, d. 1412. Tuḥfat al-ṭullāb1
- Ibn al-Nafīs, ʻAlī ibn Abī al-Ḥazm, 1210 or 1211-1288. Mūjiz1
- Ibn al-Nāẓim, Muḥammad ibn Muḥammad, d. 1287 or 8. Sharḥ al-Alfīyah1
- Ibn ʻAqīl, ʻAbd Allāh ibn ʻAbd al-Raḥmān, 1294?-1367. Sharḥ al-Alfīyah1
- Iran1
- Iran--Sabzevār (Khurāsān-i Raz̤avī)1
- Iran--Shīrāz1
- Islam1
- Islam and philosophy1
- Islam--Rituals1
- Islamic bindings1
- Islamic countries1
- Islamic learning and scholarship1
- Islamic magic1
- Islamic occultism1
- Islamic poetry, Arabic1
- Italy--Sicily1
- Iʻrāb ʻan qawāʻid al-iʻrāb (Ibn Hishām, ʻAbd Allāh ibn Yūsuf)1
- Iḥyāʼ ʻulūm al-dīn (Ghazzālī)1