Author
- Jamāl al-Dīn Ḥaṣīrī2
- Jarmakī, Abū Bakr ibn al-Ṭāhir, 18th cent2
- Jayakr̥ṣṇa2
- Jayāditya2
- Jean Germain2
- Jean de Roquetaillade2
- Jews2
- Johann Herolt2
- Johann Neudörffer the Younger2
- Johannes Nider2
- John Burgh2
- John Felton2
- John Halgren of Abbeville2
- John Wycliffe2
- John XXII2
- John of Damascus2
- John of Garland2
- John of Genoa2
- Jordan von Quedlinburg2
- Josef ibn Tabul2