- Islamic cosmology1
- Islamic eschatology1
- Islamic learning and scholarship1
- Islamic rosary1
- Iṣfahānī, Maḥmūd ibn ʻAbd al-Raḥmān, 1275 or 1276-1348 or 1349. Maṭāliʻ al-anẓār1
- Jaʻbarī, Arslān ibn Yaʻqūb, -1300. Risālat al-tawḥīd1
- Jaʻbarī, Ibrāhīm ibn ʻUmar, 1242 or 3-1331 or 2. Jamīlat arbāb al-marāṣid fī sharḥ ʻAqīlat atrāb al-qaṣāʾid1
- Judges (Islamic law)1
- Juhd al-muqill (Sājaqlīzādah, Muḥammad ibn Abī Bakr)1
- Jāmiʻ al-Azhar1
- Jāmiʻ al-ṣaḥīḥ (Muslim ibn al-Ḥajjāj al-Qushayrī)1
- Jāmī, 1414-1492. Tafsīr al-fātiḥah al-sharīfah1
- Kalbī, Diḥyah ibn Khalīfah, -approximately 6701
- Karmī, Marʻī ibn Yūsuf, -1623 or 16241
- Kaʻbah (Mecca, Saudi Arabia)1
- Kemalpaşazade, 1468 or 1469-15341
- Khuzāʻī, Diʻbil ibn ʻAlī, 765 or 766-860 or 861. Qaṣīdah1
- Kisāʼī, ʻAlī ibn Ḥamzah, -804 or 8051
- Knowledge, Theory of (Islam)1
- Legends1