- Khaṣṣāf, Aḥmad ibn ʻUmar, -874 or 875. Adab al-Qāḍī1
- Khiḍr (Legendary character)2
- Khiṭāʼī, ʻUthmān, active 15th century. Ḥāshiyah ʻalá al-Mukhtaṣar1
- Khiṭāʼī, ʻUthmān, active 15th century. Ḥāshiyah ʻalá al-Sharḥ al-mukhtaṣar7
- Khulāṣat al-ḥisāb (ʻĀmilī, Bahāʼ al-Dīn Muḥammad ibn Ḥusayn)3
- Kiddush1
- Kings and rulers17
- Kinship (Islamic law)2
- Kitāb (Sībawayh, ʻAmr ibn ʻUthmān)2
- Knowledge, Theory of (Islam)1
- Korea1
- Krishna (Hindu deity)4
- Kubera (Hindu deity)1
- Kumārasambhava (Kālidāsa)1
- Kurds1
- Kyriales1
- Kāfiyah (Ibn al-Ḥājib, ʻUthmān ibn ʻUmar)28
- Kāfiyajī, Muḥammad ibn Sulaymān, -1474. Sharḥ al-Iʻrāb ʻan qawāʻid al-iʻrāb1
- Kāfī (Kulaynī, Muḥammad ibn Yaʻqūb)6
- Kāfī fī al-ʻarūḍ wa-al-qawāfī (Tibrīzī, Yaḥyá ibn ʻAlī)1