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- Ibn Umayl, Muḥammad, active 10th century. Qaṣīdah al-Nūnīyah1
- Ibn Yūsuf al-Ṣafī, Muḥammad, 1421-14871
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- Ibn al-Mibrad, Yūsuf ibn Ḥasan, 1436 or 1437-15031
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- Illegible markings1
- Illumination of books and manuscripts1
- Imams (Shiites)1
- Indexes1
- India1
- Inheritance and succession (Islamic law)1
- Intellectual life1
- Interest (Jewish law)1
- Isbījābī, Aḥmad ibn Manṣūr, -approximately 1087. Sharḥ al-Mukhtaṣar fī al-fiqh1
- Islam and politics1
- Islam--Rituals1
- Islamic eschatology1
- Islamic etiquette1