- Isnawī, ʻAbd al-Raḥīm ibn al-Ḥasan, 1305-13701
- Isra' and Mi`raj of the Prophet Muhammad1
- Israel--Acre1
- Israel--Tsefat1
- Iʻrāb ʻan qawāʻid al-iʻrāb (Ibn Hishām, ʻAbd Allāh ibn Yūsuf)1
- Jawharat al-tawḥīd (Laqānī, Ibrāhīm ibn Ibrāhīm)1
- Jaʻbarī, Arslān ibn Yaʻqūb, -1300. Risālat al-tawḥīd1
- Jidd Ḥafṣī, ʻAlī ibn Luṭf Allāh, active 17th century-18th century1
- Jinn1
- Judges (Islamic law)1
- Jāmiʻ al-ṣaḥīḥ (Bukhārī, Muḥammad ibn Ismāʻīl)1
- Jārūdī, Nāṣir ibn Muḥammad, active 18th century1
- Kalbī, Diḥyah ibn Khalīfah, -approximately 6701
- Kashshāf (Zamakhsharī, Maḥmūd ibn ʻUmar)1
- Kaydānī. Maṭālib al-muṣallī1
- Kaʻbah (Mecca, Saudi Arabia)1
- Kemalpaşazade, 1468 or 1469-15341
- Khalwatīyah1
- Khilāṭī, Muḥammad ibn ʻAbbād, -1254. Talkhīṣ al-Jāmiʻ al-kabīr1
- Khiḍr (Legendary character)1