- Judaism--Customs and practices1
- Judeo-Arabic language1
- Julius III, Pope, 1487-15551
- Jurisprudence1
- Jurjānī, ʻAlī ibn Muḥammad, al-Sayyid al-Sharīf, 1340-1413. Ḥāshiyah ʻalá Taḥrīr al-qawāʻid al-manṭiqīyah1
- Justa, Saint, -approximately 2871
- Justice, Administration of1
- Jābir ibn Ḥayyān1
- Jāmiʻ al-Azhar1
- Karaitic literature1
- Kaʻbah (Mecca, Saudi Arabia)1
- Kemalpaşazade, 1468 or 1469-15341
- Kifāyat al-ḥuffāẓ (Ibn al-Hāʼim, Aḥmad ibn Muḥammad)1
- Kings and rulers--Heraldry1
- Kings and rulers--Religious aspects1
- Kirchmair, Georg, 1481-15541
- Knights of Malta1
- Land grants1
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- Land value taxation1