- Ibn Ṭūlūn, Shams al-Dīn Muḥammad ibn ʻAlī, 1475-15461
- Ibrāhīm ibn Adʹham, -approximately 7771
- Idkāwī, Muḥammad. Fawāʼid al-muhimmāt fī maṭāliʻ al-awqāt1
- Ijmāʻ (Islamic law)1
- Ikmāl (Ibn Mākūlā, ʻAlī ibn Hibat Allāh)1
- Ilāhʹābādī, Muḥibb Allāh. Taswīyah1
- Ilāhʹābādī, ʻAbd Allāh ibn Shihāb. Sharḥ ʻalá ḍābiṭat sharāʼiṭ al-ashkāl al-arbaʻah li-Tahdhīb al-manṭiq1
- Imaginary letters1
- Imruʼ al-Qays, 497-545. Muʻallaqah1
- Imām al-Ḥaramayn al-Juwaynī, ʻAbd al-Malik ibn ʻAbd Allāh, 1028-1085. Burhān fī uṣūl al-fiqh1
- India--Agra1
- India--Delhi1
- India--Faizabad1
- India--Mughal Empire1
- India--Surat1
- Inquisition1
- Intellect--Religious aspects--Islam1
- Iqtirāḥ fī ʻilm uṣūl al-naḥw wa-jadalih (Suyūṭī)1
- Iran--Dizfūl1
- Iran--Dāmghān1