- Justinian I, Emperor of the East, 483?-5653
- János I Zápolya, King of Hungary, 1487-15401
- Jābir ibn Ḥayyān2
- Jādarī, ʻAbd al-Raḥmān ibn Abī Ghālib, 1384 or 1385-1435 or 1436. Rawḍat al-azhār fī ʻilm waqt al-layl wa-al-nahār1
- Jāmiʻ al-Azhar5
- Jāmiʻ al-Muẓaffarī (Damascus, Syria)1
- Jāmiʻ al-Qarawīyīn (Fès, Morocco)1
- Jāmiʻ al-Umawī al-Kabīr (Aleppo, Syria)1
- Jāmiʻ al-uṣūl li-aḥādīth al-Rasūl (Ibn al-Athīr, Majd al-Dīn al-Mubārak ibn Muḥammad)1
- Jāmiʻ al-ṣaghīr (Suyūṭī)14
- Jāmiʻ al-ṣaḥīḥ (Bukhārī, Muḥammad ibn Ismāʻīl)44
- Jāmiʻ al-ṣaḥīḥ (Muslim ibn al-Ḥajjāj al-Qushayrī)22
- Jāmī, 1414-14921
- Jāmī, 1414-1492. Muʻammayāt asmāʾ al-ḥusná1
- Jāmī, 1414-1492. Poems1
- Jāmī, 1414-1492. Risālah-i muʻammā1
- Jāmī, 1414-1492. Rubāʻīyāt1
- Jāmī, 1414-1492. Tafsīr al-fātiḥah al-sharīfah1
- Jānakīnātha Bhaṭṭācārya, active 16th century. Nyāyasiddhāntamañjarī2
- Jārabardī, Aḥmad ibn al-Ḥusayn, -1346. Mughnī fī ʻilm al-naḥw1