- Kemalpaşazade, 1468 or 9-1534. Risālah fī al-haykal al-insānī1
- Keśavācārya Daivajña, active 16th century. Jātakapaddhati1
- Khalifa ben Shemuʹel, 17th century1
- Khansāʼ, -approximately 645. Dīwān1
- Khaṭīb al-Baghdādī, Abū Bakr Aḥmad ibn ʻAlī, 1002-1071. Asmāʼ al-mubhamah fī al-anbāʼ al-muḥkamah1
- Khiṭāʼī, ʻUthmān, active 15th century. Ḥāshiyah ʻalá al-Mukhtaṣar1
- Khulāṣat al-ḥisāb (ʻĀmilī, Bahāʼ al-Dīn Muḥammad ibn Ḥusayn)1
- Khānaqāh-i Niʻmat Allāhī1
- Kingdom of God1
- Kings and rulers--Heraldry1
- Kings and rulers--Religious aspects1
- Kings and rulers--Religious aspects--Hinduism1
- Kinship (Islamic law)1
- Kirchmair, Georg, 1481-15541
- Kirmānī, Maḥmūd ibn Muḥammad, 1329?-1404 or 1405. Farāʼiḍ al-ījāz1
- Kisāʼī, ʻAlī ibn Ḥamzah, -804 or 8051
- Kitāb (Sībawayh, ʻAmr ibn ʻUthmān)1
- Knafo, Shimon ben Yehuda1
- Knowledge, Theory of (Hinduism)1
- Kumayl ibn Ziyād, 633 or 634-7011