- Ibn Bābawayh al-Qummī, Muḥammad ibn ʻAlī, 918 or 919-991 or 992. Man lā yaḥḍuruhu al-faqīh1
- Ibn Taymīyah, Aḥmad ibn ʻAbd al-Ḥalīm, 1263-1328. Jawāmiʻ al-kalim1
- Ibn al-Khayyāṭ, Abū Bakr ibn Muḥammad, -14081
- Ibn al-Qāḍī, ʻAbd al-Raḥmān ibn Abī al-Qāsim, 1590 or 1591-1671 or 1672. Khilāf wa-al-tashhīr wa-al-istiḥsān1
- Ibn al-ʻArabī, 1165-1240. Qaṣīdah al-ʻishqīyah1
- Ibn al-ʻArabī, 1165-1240. Ṣalawāt al-Muḥammadīyah1
- Illumination of books and manuscripts, Medieval1
- Imams (Shiites)1
- Incantations, Hebrew1
- Indexes1
- India1
- Inheritance and succession (Islamic law)1
- Inheritance and succession (Jewish law)1
- Initials1
- Insertions (Provenance)1
- Intellect--Religious aspects--Islam1
- Interfaith relations1
- Introductions1
- Iran1
- Isidore, of Seville, Saint, -6361