- Karaite manuscripts1
- Karaitic literature1
- Kashshāf (Zamakhsharī, Maḥmūd ibn ʻUmar)2
- Kaʻbah (Mecca, Saudi Arabia)1
- Kemalpaşazade, 1468 or 1469-15341
- Kemalpaşazade, 1468 or 1469-1534. Iṣlāḥ wa-al-īḍāḥ1
- Ketubah1
- Khabbāzī, ʻUmar ibn Muḥammad, 1231 or 1232-1292. Mughnī fī uṣūl al-fiqh1
- Khamrīyah (Ibn al-Fāriḍ, ʻUmar ibn ʻAlī)1
- Khamti language1
- Khaṭīb al-Baghdādī, Abū Bakr Aḥmad ibn ʻAlī, 1002-1071. Asmāʼ al-mubhamah fī al-anbāʼ al-muḥkamah1
- Kings and rulers47
- Kings and rulers--Duties1
- Kings and rulers--Genealogy2
- Kings and rulers--Heraldry1
- Kings and rulers--Religious aspects1
- Kings and rulers--Succession1
- Kirchmair, Georg, 1481-15541
- Kirmānī, Maḥmūd ibn Muḥammad, 1329?-1404 or 1405. Farāʼiḍ al-ījāz1
- Knights of Malta3