- Hymns, Latin (Medieval and modern)12
- Ibn Amīn al-Dawlah, al-ʻAfīf, active 15th century. Lamḥah al-ʻAfīfīyah fī al-ṭibb1
- Ibn Saʻādah, Aḥmad ibn ʻAlī, active 13th century. Risālat al-ʻilm1
- Ibn Zaydūn, Aḥmad ibn ʻAbd Allāh, 1003 or 4-1071. Risālah al-jiddīyah1
- Ibn al-Biṭrīq, Yūḥannā, -approximately 8151
- Ibn al-Fāriḍ, ʻUmar ibn ʻAlī, 1181 or 1182-1235. Tāʾīyah1
- Ibn al-Nafīs, ʻAlī ibn Abī al-Ḥazm, 1210 or 1211-1288. Mūjaz fī al-ṭibb2
- Ibn al-Uqlīshī, Aḥmad ibn Maʻadd, -1155 or 11562
- Ibn al-ʻArabī, 1165-12401
- Ijtihād (Islamic law)1
- Illegible markings1
- Illinois--Chicago4
- Illumination of books and manuscripts34
- Illumination of books and manuscripts, Arab5
- Illumination of books and manuscripts, French2
- Illumination of books and manuscripts, Gothic25
- Illumination of books and manuscripts, Iranian7
- Illumination of books and manuscripts, Italian3
- Illumination of books and manuscripts, Medieval5
- Illumination of books and manuscripts, Mosan1