- Ibn Nujaym, Zayn al-Dīn ibn Ibrāhīm, -1563. Ṣaghāʼir wa-al-kabāʼir2
- Ibn Taymīyah, Aḥmad ibn ʻAbd al-Ḥalīm, 1263-13282
- Ibn Wahbān, ʻAbd al-Wahhāb ibn Aḥmad, d. 1366 or 7. Qayd al-sharāʼid2
- Ibn Zaydūn, Aḥmad ibn ʻAbd Allāh, 1003 or 1004-1071. Risālah al-hazalīyah2
- Ibn al-Hāʼim, Aḥmad ibn Muḥammad, -1412. Lumaʻ al-yasīrah fī ʻilm al-ḥisāb2
- Ibn al-Jazarī, Muḥammad ibn Muḥammad, 1350-1429. Arbaʻūn masʼalah min masāʼil muskhilah2
- Ibn al-ʻArabī, 1165-12402
- Ibn al-ʻArabī, 1165-1240. Manẓūmat Kashf al-Rān2
- Idra rabba2
- Illegitimacy2
- Illumination of books and manuscripts, Ethiopian2
- Illumination of books and manuscripts, German2
- Illumination of books and manuscripts, Medieval2
- Illusion (Philosophy)2
- India--Andhra Pradesh2
- India--Cochin2
- India--Mathurā2
- India--West Bengal2
- India--Yamuna River2
- Indians of Mexico--Missions2