- Kabāʼir (Muḥammad ibn ʻAbd al-Wahhāb)1
- Kansas--Lawrence1
- Kemalpaşazade, 1468 or 1469-1534. Iṣlāḥ wa-al-īḍāḥ1
- Khadījah, -approximately 6191
- Khansāʼ, -approximately 645. Dīwān1
- Khiṭāʼī, ʻUthmān, active 15th century. Ḥāshiyah ʻalá al-Mukhtaṣar1
- 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
- Kings and rulers--Genealogy1
- Kings and rulers--Religious aspects1
- Kinship (Islamic law)1
- Leather bindings1
- Letter writing, Persian1
- Letter writing, Turkish1
- Liturgics1
- Logic, Medieval1
- Love poetry, Arabic1
- Love--Philosophy1
- Lubāb al-iʻrāb al-māniʻ min al-laḥn fī al-sunnah wa-al-Kitāb (Shaʻrānī, ʻAbd al-Wahhāb ibn Aḥmad)1
- Lumʻah al-Dimashqīyah (Shahīd al-Awwal, Muḥammad ibn Makkī)1