- Imamate1
- Immortality--Islam1
- Imruʼ al-Qays, 497-545. Muʻallaqah1
- Imām al-Ḥaramayn al-Juwaynī, ʻAbd al-Malik ibn ʻAbd Allāh, 1028-1085. Burhān fī uṣūl al-fiqh1
- Imāmʹzādah, Muḥammad ibn Abī Bakr, 1097 or 1098-1177 or 1178. Shirʻat al-Islām1
- India--Delhi1
- India--Faizabad1
- India--Hyderabad1
- Inlays1
- Inquisition1
- Interest (Islamic law)1
- Interpersonal relations--Religious aspects--Islam1
- Iran--Dāmghān1
- Iran--Qazvīn1
- Iraq--Baghdad1
- Iraq--Erbil1
- Isbījābī, Aḥmad ibn Manṣūr, -approximately 1087. Sharḥ al-Mukhtaṣar fī al-fiqh1
- Isfarāyīnī, Muḥammad ibn Muḥammad, -1285. al-Lubāb fī ʻilm al-iʻrāb1
- Isfarāyīnī, Muḥammad ibn Muḥammad, d. 1285. Lubāb al-iʻrāb1
- Ishrāqīyah1