- Jurjānī, ʻAlī ibn Muḥammad, al-Sayyid al-Sharīf, 1340-1413. Sharḥ khuṭbah al-Quṭbīyah3
- Jurjānī, ʻAlī ibn Muḥammad, al-Sayyid al-Sharīf, 1340-1413. Ḥāshiyah ʻalá Lawāmiʻ al-asrār3
- Karaites (Jewish law)3
- Kaydānī. Fiqh al-Kaydānī3
- Ketubah3
- Khabbāzī, ʻUmar ibn Muḥammad, 1231 or 2-1292. Mughnī fī uṣūl al-fiqh3
- Khamrīyah (Ibn al-Fāriḍ, ʻUmar ibn ʻAlī)3
- Khiḍr (Legendary character)3
- Kinship (Islamic law)3
- Kitāb (Sībawayh, ʻAmr ibn ʻUthmān)3
- Knowledge, Theory of3
- Lamaʻāt (ʻIrāqī, Fakhr al-Dīn Ibrāhīm)3
- Laments3
- Legacies (Islamic law)3
- Legal forms3
- Legal instruments3
- Lent3
- Lettering3
- Literature, Medieval3
- Logic, Medieval3