- Iran--Qazvīn1
- Iran--Rasht1
- Iran--Shīrāz1
- Iraq1
- Iraq--Erbil1
- Islam and politics1
- Islam--Theology1
- Islamic calendar1
- Islamic eschatology1
- Islamic etiquette1
- Islamic heresies1
- Islamic occultism1
- Islamic religious education1
- Israel--Acre1
- Iṣfahānī, Maḥmūd ibn ʻAbd al-Raḥmān, 1275 or 1276-1348 or 1349. Tasdīd al-ʻaqāʾid fī sharḥ Tajrīd al-qawāʻid1
- Iẓhār al-asrār (Birgivî Mehmet Efendi)1
- Jaʻbarī, Arslān ibn Yaʻqūb, -1300. Risālat al-tawḥīd1
- Jinn1
- Jurjānī, ʻAlī ibn Muḥammad, al-Sayyid al-Sharīf, 1340-1413. Sharḥ khuṭbah al-Quṭbīyah1
- Jurjānī, ʻAlī ibn Muḥammad, al-Sayyid al-Sharīf, 1340-1413. Ḥāshiyah ʻalá Maṭāliʻ al-anwār1