- Jazūlī, Yaḥyá ibn Mūsá1
- Jaʻfar Astarābādī1
- Jaʻfar Vāʻiẓ1
- Jean-Claude de La Poype de Vertrieu1
- John Chrysostom1
- Kabbāshī, Aḥmad1
- Kahvecizâde, Ahmed bin Hüseyin1
- Kamāl al-Dīn ibn Āsāyish Shirwānī1
- Karim Khan Kermani1
- Khalaf Barbarī1
- Khalīl Ibn Walī1
- Khalīl ibn Shāhīn1
- Khalīl ibn al-Ghāzī Qazwīnī1
- Khaqani1
- Khayr al-Din al-Ramli1
- Khaṭīb Qādā, ʻAbd Allāh ibn Muḥammad, active 15th century1
- Khaṭṭāṭ, Ibrāhīm ibn Aḥmad, 18th cent1
- Khuwarizmī, Jamāl al-Dīn Abu Bakr1
- Kindī, ʻAmr ibn al-ʻĀṣ1
- Kirmānī, Muḥammad ibn ʻAlī1