- Ibn Saʻādah, Aḥmad ibn ʻAlī, active 13th century. Risālat al-ʻilm2
- Ibn al-Hāʼim, Aḥmad ibn Muḥammad, d. 1412. Murshidat al-ṭālib ilá asná al-maṭālib2
- Ibn al-Muqrī, Ismāʻīl ibn Abī Bakr, 1354-1433 or 1434. Rawḍ al-ṭālib2
- Ibn al-Shahīd al-Thānī, al-Ḥasan, 1551 or 1552-1602 or 1603. Maʻālim al-dīn wa-malādhdh al-mujtahidīn2
- Ibn Ḥajar al-ʻAsqalānī, Aḥmad ibn ʻAlī, 1372-1449. Nuzhat al-naẓar fī tawḍīḥ Nukhbat al-fikar2
- Illumination of books and manuscripts2
- Imāmʹzādah, Muḥammad ibn Abī Bakr, 1097 or 1098-1177 or 1178. Shirʻat al-Islām2
- Intention--Religious aspects--Islam2
- Interfaith relations2
- Iqnāʼ (Ḥujāwī, Mūsá ibn Aḥmad)2
- Iran--Shīrāz2
- Iraq--Baghdad2
- Iraq--Dihōk2
- Iraq--Sandūr2
- Isfarāyīnī, Muḥammad ibn Muḥammad, -1285. Ḍawʼ al-Miṣbāḥ2
- Isfarāyīnī, Muḥammad ibn Muḥammad, d. 1285. Ḍawʼ ʻalá al-Miṣbāḥ2
- Islam--Theology2
- Islamic etiquette2
- Islamic poetry, Arabic2
- Islamic stories2