- Jaʻfar Astarābādī1
- Jaʻfar Vāʻiẓ1
- Jean-Claude de La Poype de Vertrieu1
- Jonas King1
- Khalwatī, Muḥammad1
- Khujandī, Muḥammad ibn Muḥammad, -approximately 13501
- Khuwānsārī, Muḥammad ibn Ḥusayn, d. 17131
- Khādimī, ʻAbd Allāh ibn Muḥammad, d. 17781
- Kudālī, Ḥasan1
- Kulaynī, Muḥammad ibn Yaʻqūb, -941?1
- Kumayl ibn Ziyad1
- Köprülüzāde, ʻAbd Allāh ibn Muṣṭafá, d. 17351
- Kāẓim ibn Qāsim Rashtī1
- Lālah, Muḥammad ibn ʻAbd al-Salīm1
- Madanī, Aḥmad ibn ʻAlī, d. 1722 or 31
- Maghnīsāwī, Maḥmūd ibn Ḥasan1
- Mahdī ibn ʻAlī Ṣubunrī1
- Mahmud Hamza1
- Mahmud Hudayi1
- Mahmud al-Alusi1