- Jamāl al-Dīn Aḥmad ibn Muḥammad Ẓāhirī1
- Jarmakī, Abū Bakr ibn al-Ṭāhir, 18th cent1
- Jayyānī, al-Ḥusayn ibn Muḥammad, 1035-1105?1
- Junayd ibn Sandal Baghdādī1
- Kabbāshī, Aḥmad1
- Kamāl al-Dīn ibn Āsāyish Shirwānī1
- Karim Khan Kermani1
- Kaḥḥāl, ʻAlī ibn ʻĪsá, -1038 or 10391
- Khalaf Barbarī1
- Khalwatī, Muḥammad1
- Khalīl Ibn Walī1
- Khalīl ibn Shāhīn1
- Khalīl ibn al-Ghāzī Qazwīnī1
- Khaṭīb Qādā, ʻAbd Allāh ibn Muḥammad, active 15th century1
- Khaṭṭāṭ, Ibrāhīm ibn Aḥmad, 18th cent1
- Khuwarizmī, Jamāl al-Dīn Abu Bakr1
- Khwājakīzādah, Muṣṭafá ibn Muḥammad, d. 15901
- Khāṭirī, Aḥmad ibn Muḥammad1
- Kindī, ʻAmr ibn al-ʻĀṣ1
- Kirmānī, Muḥammad ibn ʻAlī1