- Khamrīyah (Ibn al-Fāriḍ, ʻUmar ibn ʻAlī)2
- Khulāṣat al-ḥisāb (ʻĀmilī, Bahāʼ al-Dīn Muḥammad ibn Ḥusayn)4
- Khuzāʻī, Diʻbil ibn ʻAlī, 765 or 766-860 or 861. Qaṣīdah1
- Khānaqāh-i Niʻmat Allāhī1
- Kings and rulers14
- Kinship (Islamic law)3
- Knowledge, Theory of (Islam)2
- Kumayl ibn Ziyād, 633 or 634-7011
- Kurds1
- Kāfiyah (Ibn al-Ḥājib, ʻUthmān ibn ʻUmar)4
- Kāfī (Kulaynī, Muḥammad ibn Yaʻqūb)6
- Kāsānī, Aḥmad Khvājagī1
- Lacquered bindings32
- Lamaʻāt (ʻIrāqī, Fakhr al-Dīn Ibrāhīm)3
- Landscapes1
- Language and languages--Philosophy1
- Leather doublures3
- Legacies (Islamic law)1
- Legal documents1
- Legal documents (Islamic law)1