- Kaʻbah (Mecca, Saudi Arabia)1
- Kemalpaşazade, 1468 or 1469-15341
- Khabbāzī, ʻUmar ibn Muḥammad, 1231 or 2-1292. Mughnī fī uṣūl al-fiqh1
- Khawāfī, Muḥammad ibn Muḥammad, 1356-1435. Awrād al-Zaynīyah1
- Kifāyat al-ḥuffāẓ (Ibn al-Hāʼim, Aḥmad ibn Muḥammad)1
- Kings and rulers--Genealogy1
- Kings and rulers--Heraldry1
- Kirchmair, Georg, 1481-15541
- Lafões, Pedro Henrique de Bragança, Duque de, 1718-17611
- Land grants1
- Land value taxation1
- Languages, Secret1
- Latin drama (Tragedy)1
- Latin literature--Study and teaching1
- Latin poetry, Medieval and modern1
- Laudatory poetry1
- Lawyers1
- Lazari, Marlinus Micarias1
- Learning and scholarship1
- Lebanon--Tripoli1