Author
- Jaghmini1
- Jalal al-Din Mohammad Tabrizi1
- Jawād ibn Saʻd Jawād al-Baghdādī1
- Jayakṛṣṇa Brahmamuni1
- Jayalakṣmī1
- Jayarāmanyāyapañcānana1
- Jayarāmācārya1
- Jaʻfar Astarābādī1
- Jean-Baptiste Hauchamps1
- Jews1
- Joseph ben Abraham Gikatilla1
- Joshua ben Israel Benveniste1
- Juan Vicente de Güemes, 2nd Count of Revillagigedo1
- Judah Leib Prossnitz1
- Judah Rosanes1
- Kalyanamalla1
- Kamal al-Din ibn al-Humam1
- Kamalākara Bhaṭṭa1
- Kamalākarabhaṭṭa1
- Karaçelebizade Abdülaziz1