- Ibn al-Muṭahhar al-Ḥillī, al-Ḥasan ibn Yūsuf, 1250-1325. Tahdhīb al-wuṣūl ilá ʻilm al-uṣūl1
- Ibn al-Nafīs, ʻAlī ibn Abī al-Ḥazm, 1210 or 1211-1288. Mūjiz al-Qānūn1
- Ibn al-Najjār, Taqī al-Dīn Muḥammad ibn Aḥmad, 1492 or 1493-1564 or 1565. Mukhtaṣar al-Taḥrīr1
- Ibn al-Naḥwī, Yūsuf ibn Muḥammad, approximately 1041-1119 or 1120. Qaṣīdah al-munfarijah1
- Ibn al-Sāʻātī, Aḥmad ibn ʻAlī, 1254-1294 or 5. Majmaʻ al-baḥrayn wa-multaqá al-nayyirayn1
- Ibn al-ʻImād al-Aqfahsī, Aḥmad, ca. 1349-1405. Iqtiṣād fī kifāyat al-ʻuqqād1
- Iceland1
- Ildephonsus, Saint, approximately 610-6671
- Illumination of books and manuscripts, French1
- Illumination of books and manuscripts, Medieval1
- Imamate1
- Imams (Shiites)1
- Incantations, Hebrew1
- India--Goa (State)1
- India--Surat1
- Indians of Central America--Missions1
- Indians of Mexico--Land tenure1
- Indians of Mexico--Legal status, laws, etc.1
- Indians of Mexico--Social life and customs1
- Indians of South America1