- Johannes Baldung1
- Johannes Malgarius de Parma1
- Johannes Petrus Mathei1
- Johannes Vischer1
- Johannes de Luxia1
- Johannes van der Kemp1
- Johannes, de Beylario1
- Joseph ben Isaac Gallico1
- Juan de la Mote1
- Judah ben Jacob1
- Jundī, Arslān ibn Muḥammad ʻAlī, active 19th century1
- Jābir ibn Ibrāhīm, active 16th century1
- Jābir ibn Sālim Shihāb al-Baghdādī1
- Jīlānī, Ibn Muḥammad Yūsuf, active 17th century1
- Kastamūnī, ʻAbd al-Raḥmān1
- Khalid Balti1
- Khūjah, Muḥammad Aḥmad1
- Kinānī, Ibrāhīm ibn Muṣṭafá, active 19th century1
- Kâtip Boşnāḳ Ibrāhīm ibn Aḥmet1
- Kāśīnātha1