- Judgment Day1
- Judgment Day (Islam)1
- Judgment of God1
- Julian, of Eclanum, Bishop, 380-approximately 4551
- Julii family1
- Jumʻah1
- Jurjānī, ʻAlī ibn Muḥammad, al-Sayyid al-Sharīf, 1340-1413. Miṣbāḥ fī sharḥ al-Miftāḥ1
- Jurjānī, ʻAlī ibn Muḥammad, al-Sayyid al-Sharīf, 1340-1413. Sharḥ mushkilāt al-Kashshāf1
- Jurjānī, ʻAlī ibn Muḥammad, al-Sayyid al-Sharīf, 1340-1413. Ḥāshiyah ʻalá Taḥrīr al-qawāʻid al-manṭiqīyah1
- Jurjānī, ʻAlī ibn Muḥammad, al-Sayyid al-Sharīf, 1340-1413. Ḥāshiyah ʻalá al-Sharḥ al-Muṭawwal1
- Jurjānī, ʻAlī ibn Muḥammad, al-Sayyid al-Sharīf, 1340-1413. Ḥāshiyah ʻalá sharḥ Tajrīd al-iʻtiqād1
- Jurjānī, ʻAlī ibn Muḥammad, al-Sayyid al-Sharīf, 1340-1413. ḥāshiyah ʻalá Lawāmiʻ al-asrār1
- Justinian I, Emperor of the East, 483?-5651
- Jāmiʻ al-Muẓaffarī (Damascus, Syria)1
- Jāmiʻ al-Qarawīyīn (Fès, Morocco)1
- Jāmiʻ al-Umawī al-Kabīr (Aleppo, Syria)1
- Jārbardī, Fakhr al-Dīn Aḥmad ibn al-Ḥasan, -1345. Mughnī fī ʻilm al-naḥw1
- Kapitalbünde1
- Karaite law1
- Karaite manuscripts1