- Khulāṣat al-ḥisāb (ʻĀmilī, Bahāʼ al-Dīn Muḥammad ibn Ḥusayn)1
- Khwājahʹzādah, Muṣṭafá ibn Yūsuf, -1487 or 14881
- Khānaqāh-i Niʻmat Allāhī1
- Kifāyat al-ḥuffāẓ (Ibn al-Hāʼim, Aḥmad ibn Muḥammad)1
- Kings and rulers--Duties1
- Kings and rulers--Genealogy1
- Kyi︠e︡vo-Pechersʹka lavra1
- Kyriales1
- Kātī, Ḥusām al-Dīn al-Ḥasan, -1358 or 1359. Qāla aqūl1
- Lamaʻāt (ʻIrāqī, Fakhr al-Dīn Ibrāhīm)1
- Landlord and tenant1
- Lang, Matthäus, 1468-15401
- Language and languages--Philosophy1
- Languages, Secret1
- Latin drama (Comedy)1
- Latin drama (Tragedy)1
- Latin letters, Medieval and modern1
- Law, Medieval1
- Laylat al-Qadr1
- Learning and scholarship1