- Ibn Quṭlūbughā, al-Qāsim ibn ʻAbd Allāh, 1399 or 1400-1474 or 1475. Ḥawālah1
- Ibn al-Fāriḍ, ʻUmar ibn ʻAlī, 1181 or 1182-12351
- Ibn al-Jazarī, Muḥammad ibn Muḥammad, 1350-1429. Arbaʻūn masʼalah min masāʼil muskhilah1
- Ibn al-Ḥājib, ʻUthmān ibn ʻUmar, 1175-1249. Shāfiyah fī al-taṣrīf1
- Ibn ʻAllān, Muḥammad ʻAlī ibn Muḥammad, 1588-1648. Ḍawābiṭ al-taqṭīʻ1
- Ibn Ḥajar al-Haythamī, Aḥmad ibn Muḥammad, approximately 1503-approximately 1566. Fatḥ al-mubīn li-sharḥ al-Arbaʻīn1
- Ibn Ḥajar al-Haythamī, Aḥmad ibn Muḥammad, approximately 1503-approximately 1566. Iʻlām bi-qawāṭiʻ al-Islām1
- Illegible markings1
- Illumination of books and manuscripts, Turkish1
- Illustrated works1
- Imams (Shiites)1
- Inlays1
- Interest (Islamic law)1
- Interfaith relations1
- Iran--Dizfūl1
- Iran--Tabrīz1
- Iran--Ārān va Bīdgul1
- Iraq--Baghdad1
- Islamic New Year1
- Islamic calendar1