- Kemalpaşazade, 1468 or 1469-1534. Tafsīr al-Fātiḥah1
- Ketubah1
- Khalwatīyah1
- Khamrīyah (Ibn al-Fāriḍ, ʻUmar ibn ʻAlī)1
- Khulāṣat al-ḥisāb (ʻĀmilī, Bahāʼ al-Dīn Muḥammad ibn Ḥusayn)1
- Khūjahʹzādah, ʻAbd al-Naṣīr ibn ʻAbd Allāh, active 16th century. Taḥrīrāt ʻalá al-Ṭarīqah al-Muḥammadīyah1
- Knowledge, Theory of (Islam)1
- Kumayl ibn Ziyād, 633 or 634-7011
- Ladino language1
- Ladino literature1
- Language and languages--Style1
- Latin language--Study and teaching1
- Latin literature1
- Leather bindings1
- Leather doublures1
- Lectionaries1
- Lilium medicinae (Bernard, de Gordon)1
- Limp bindings1
- Literature, Medieval1
- Logic, Medieval1