- Jāmiʻ al-Qarawīyīn (Fès, Morocco)1
- Jāmiʻ al-ṣaḥīḥ (Bukhārī, Muḥammad ibn Ismāʻīl)1
- Jāmī, 1414-1492. Risālah-i muʻammā1
- Jārūdī, Nāṣir ibn Muḥammad, active 18th century1
- Kaffawī, Ayyūb ibn Mūsá, 1618 or 1619-1682 or 1683. Kullīyāt Abī al-Baqāʼ1
- Kalbī, Diḥyah ibn Khalīfah, -approximately 6701
- Kanz al-daqāʼiq (Nasafī, ʻAbd Allāh ibn Aḥmad)20
- Kardarī, Ibn al-Bazzāz, -1424. Fatāwá al-Bazzāzīyah1
- Karmī, Marʻī ibn Yūsuf, -1623 or 1624. Ghāyat al-muntahá fī al-jamʻ bayna al-Iqnāʻ wa-al-Muntahá1
- Kashshāf (Zamakhsharī, Maḥmūd ibn ʻUmar)2
- Kaydānī. Fiqh al-Kaydānī3
- Kaydānī. Maṭālib al-muṣallī1
- Kaydānī. Risālah fī al-mashrūʻāt wa-ghayr al-mashrūʻāt1
- Kaʻbah (Mecca, Saudi Arabia)1
- Kemalpaşazade, 1468 or 1469-15341
- Khalwatīyah1
- Khalīl ibn Isḥāq al-Jundī, -1365? Mukhtaṣar. Bāb al-yamīn1
- Khamrīyah (Ibn al-Fāriḍ, ʻUmar ibn ʻAlī)1
- Khayālī, Aḥmad ibn Mūsá, -1457? Ḥāshiyah ʻalá sharḥ al-Taftāzānī1
- Khaṣṣāf, Aḥmad ibn ʻUmar, d. 874 or 5. Adab al-qāḍī2