- Interest (Islamic law)1
- Interfaith relations1
- Iran1
- Iran--Tehran1
- Islamic cosmology1
- Islamic etiquette1
- Islamic religious education1
- Islamic sermons, Arabic1
- Iṣfahānī, Maḥmūd ibn ʻAbd al-Raḥmān, 1275 or 1276-1348 or 1349. Maṭāliʻ al-anẓār1
- Judaism1
- Judgment Day (Islam)1
- Jumʻah1
- Jurjānī, ʻAlī ibn Muḥammad, al-Sayyid al-Sharīf, 1340-1413. Ḥāshiyah ʻalá Sharḥ Mukhtaṣar al-Muntahá1
- Jāmī, 1414-14921
- Jāmī, 1414-1492. Risālah-i muʻammā1
- Khamrīyah (Ibn al-Fāriḍ, ʻUmar ibn ʻAlī)1
- Knowledge, Theory of (Islam)1
- Kumayl ibn Ziyād, 633 or 634-7011
- Legacies (Islamic law)1
- Liquor laws (Islamic law)1