- Interest (Islamic law)4
- Isfarāyīnī, Muḥammad ibn Muḥammad, d. 1285. Ḍawʼ ʻalá al-Miṣbāḥ4
- Islam and philosophy4
- Islamic interpretations of Adam4
- Istiṣḥāb (Islamic law)4
- Iṣfahānī, Maḥmūd ibn ʻAbd al-Raḥmān, 1275 or 1276-1348 or 1349. Maṭāliʻ al-anẓār4
- Jewish law4
- Jews4
- Kitāb (Sībawayh, ʻAmr ibn ʻUthmān)4
- Legends4
- Letter writing, Turkish4
- Liquor laws (Islamic law)4
- Loans (Islamic law)4
- Manners and customs4
- Manuscripts, Urdu4
- Manāzil al-sāʼirīn (Anṣārī al-Harawī, ʻAbd Allāh ibn Muḥammad)4
- Mardāwī, ʻAlī ibn Sulaymān, 1414 or 1415-1480 or 1481. Tanqīḥ al-mushbiʻ fī taḥrīr aḥkām al-Muqniʻ4
- Martyrdom--Islam4
- Mas̲navī (Jalāl al-Dīn Rūmī, Maulana)4
- Medicine, Persian4