- Khabbāzī, ʻUmar ibn Muḥammad, 1231 or 1232-1292. Mughnī fī uṣūl al-fiqh1
- Khaṭīb al-Baghdādī, Abū Bakr Aḥmad ibn ʻAlī, 1002-1071. Asmāʼ al-mubhamah fī al-anbāʼ al-muḥkamah1
- Kiddush1
- Kāfiyah (Ibn al-Ḥājib, ʻUthmān ibn ʻUmar)1
- Lancelot (Legendary character)1
- Land grants1
- Lathom, Robert de, 13th century1
- Latin language--Etymology1
- Latin poetry1
- Latin poetry, Medieval and modern1
- Leather bindings1
- Letters, Papal1
- Literature1
- Logic, Medieval1
- Lord's prayer1
- Ludwig IV, Holy Roman Emperor, 1282?-13471
- Manuscripts, Aramaic1
- Manuscripts, German1
- Manuscripts, Provençal1
- Manuscripts, Renaissance1