- Ibn Ḥajar al-ʻAsqalānī, Aḥmad ibn ʻAlī, 1372-1449. Tahdhīb al-Tahdhīb.--Abridgment2
- Ibn Ḥanbal, Aḥmad ibn Muḥammad, 780-8551
- Ibn Ḥijjah al-Ḥamawī, Taqī al-Dīn Abū Bakr ibn ʻAlī, -1434. Badīʻīyat1
- Ibn ḥajar al-Haythamī, Aḥmad ibn Muḥammad, approximately 1503-approximately 1566. Sharḥ al-Muqaddimah al-ḥaḍramīyah1
- Ibn ḥajar al-Haythamī, Aḥmad ibn Muḥammad, approximately 1503-approximately 15666. Iʻlām li-qawāṭiʻ al-Islām1
- Ibn Ṭūlūn, Shams al-Dīn Muḥammad ibn ʻAlī, 1475-15461
- Ibrāhīm ibn Adʹham, -approximately 7771
- Ibrāhīm, Pasha, 1789-18482
- Idkāwī, Muḥammad. Fawāʼid al-muhimmāt fī maṭāliʻ al-awqāt1
- Ijmāʻ (Islamic law)1
- Ijtihād (Islamic law)4
- Ikmāl (Ibn Mākūlā, ʻAlī ibn Hibat Allāh)1
- Illustrated works17
- Ilāhʹābādī, Muḥibb Allāh. Taswīyah1
- Ilāhʹābādī, ʻAbd Allāh ibn Shihāb. Sharḥ ʻalá ḍābiṭat sharāʼiṭ al-ashkāl al-arbaʻah li-Tahdhīb al-manṭiq1
- Imaginary letters1
- Imamate13
- Imams (Shiites)40
- Imams (Shiites)--Biography2
- Immortality--Christianity1