- Ibn al-ʻArabī, 1165-12401
- Ibn ʻAqīl, ʻAbd Allāh ibn ʻAbd al-Raḥmān, 1294?-1367. Sharḥ al-Alfīyah1
- Ibn ʻUmrān, Muḥammad ibn Mūsá, 1392-14691
- Ibn Ḥijjah al-Ḥamawī, Taqī al-Dīn Abū Bakr ibn ʻAlī, -1434. Badīʻīyat1
- Illumination of books and manuscripts6
- Illumination of books and manuscripts, Flemish2
- Illumination of books and manuscripts, Gothic6
- Illumination of books and manuscripts, Italian2
- Illumination of books and manuscripts, Medieval1
- Illustrated works1
- Indulgences1
- Inheritance and succession13
- Inheritance and succession (Islamic law)14
- Ink1
- Ink stamps1
- Inquisition4
- Intellectual life10
- Interdict (Canon law)1
- International relations5
- Investiture (Feudal law)1