- Judeo-Persian literature2
- Judges (Islamic law)2
- Judgment Day2
- Judgment of God2
- Jurjānī, ʻAlī ibn Muḥammad, al-Sayyid al-Sharīf, 1340-1413. Ḥāshiyah ʻalá Sharḥ Mukhtaṣar al-Muntahá2
- Jurjānī, ʻAlī ibn Muḥammad, al-Sayyid al-Sharīf, 1340-1413. Ḥāshiyat al-Tajrīd2
- Justinian I, Emperor of the East, 483?-5652
- Jānakīnātha Bhaṭṭācārya, active 16th century. Nyāyasiddhāntamañjarī2
- Karaites (Jewish law)2
- Khalwatīyah2
- Khamrīyah (Ibn al-Fāriḍ, ʻUmar ibn ʻAlī)2
- Khawwāṣ, Aḥmad ibn ʻAbbād, 1378?-1454. Kāfī fī ʻilmay al-ʻarūḍ wa-al-qawāfī2
- Khūjahʹzādah, ʻAbd al-Naṣīr ibn ʻAbd Allāh, active 16th century. Taḥrīrāt ʻalá al-Ṭarīqah al-Muḥammadīyah2
- Kingdom of God2
- Kings and rulers--Heraldry2
- Kings and rulers--Religious aspects2
- Kitāb (Sībawayh, ʻAmr ibn ʻUthmān)2
- Knights and knighthood2
- Knowledge, Theory of (Hinduism)2
- Kumayl ibn Ziyād, 633 or 634-7012