- Jāmiʻ al-ṣaḥīḥ (Muslim ibn al-Ḥajjāj al-Qushayrī)1
- Karaite manuscripts1
- Karaitic literature1
- 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 rulers--Genealogy1
- Kings and rulers--Heraldry1
- Kings and rulers--Religious aspects1
- Kirchmair, Georg, 1481-15541
- Kirmānī, Maḥmūd ibn Muḥammad, 1329?-1404 or 1405. Farāʼiḍ al-ījāz1
- Knights of Malta1
- Lacquered bindings1
- Lafões, Pedro Henrique de Bragança, Duque de, 1718-17611
- Land titles--Registration and transfer1
- Language and languages--Philosophy1
- Latin language1
- Latin letters, Medieval and modern1
- Latin poetry1