Author
- Jean Filesac1
- Jean-François Roussin1
- Joannes Oliva1
- John Davnay1
- John Dennis1
- John Fortescue1
- John Sergeant1
- John Skyrrow1
- John de Beauchesne1
- Josef ibn Tabul1
- Joseph ben Abraham Gikatilla1
- Joshua ibn Shuaib1
- José Pellicer1
- Juan Alvarez1
- Juan López Ossorio1
- Juan Ortiz Campoy1
- Juan Valenzuela Velázquez1
- Juan de Mongaston1
- Judah Rosanes1
- Jāwushzādah, Ibrāhīm ibn Muḥammad, d. 1640 or 11