- Ismāʻīl Ḥaqqī Āsikjīʹzādah1
- Isḥāq ibn Ḥasan Tūqādī1
- Jaafar Al-Sadiq1
- Jalal al-Din Davani1
- James Raymond Wellsted1
- Jamāl al-Dīn Khvānsārī1
- Jawad al-Amili1
- Jaʻfar Vāʻiẓ1
- Jean-Claude de La Poype de Vertrieu1
- Jonas King1
- Kahvecizâde, Ahmed bin Hüseyin1
- Khalwatī, Muḥammad1
- Khaqani1
- Khujandī, Muḥammad ibn Muḥammad, -approximately 13501
- Khuwānsārī, Muḥammad ibn Ḥusayn, d. 17131
- Khādimī, ʻAbd Allāh ibn Muḥammad, d. 17781
- Khālid ibn ʻAbd Allāh al-Azharī1
- Kulaynī, Muḥammad ibn Yaʻqūb, -941?1
- Kumayl ibn Ziyad1
- Köprülüzāde, ʻAbd Allāh ibn Muṣṭafá, d. 17351