- Khiḍr (Legendary character)3
- Khiṭāʼī, ʻUthmān, active 15th century. Ḥāshiyah ʻalá al-Mukhtaṣar1
- Khulāṣat al-ḥisāb (ʻĀmilī, Bahāʼ al-Dīn Muḥammad ibn Ḥusayn)1
- Kings and rulers4
- Kinship (Islamic law)1
- Kirmānī, Maḥmūd ibn Muḥammad, 1329?-1404 or 1405. Farāʼiḍ al-ījāz1
- Kisāʼī, ʻAlī ibn Ḥamzah, -804 or 8051
- Kitāb (Sībawayh, ʻAmr ibn ʻUthmān)1
- Knowledge, Theory of (Islam)2
- Kāfiyah (Ibn al-Ḥājib, ʻUthmān ibn ʻUmar)18
- Kāfī al-mubtadiʼ min al-ṭullāb (Ibn Balabān, Muḥammad ibn Badr al-Dīn)1
- Language and languages--Philosophy7
- Language and languages--Style1
- Latin language1
- Latin language--Grammar1
- Latin literature2
- Law1
- Laylat al-Barāʼah1
- Laylat al-Qadr1
- Learning and scholarship6