Author
- Jalaluddin al-Mahalli1
- James V of Scotland1
- Jami1
- Jerónimo de Vivar1
- Jews1
- Jiang Zhi1
- Jiménez de Enciso, Andrés1
- Joanna I of Naples1
- Joanna of Austria, Princess of Portugal1
- Joannes Dominicus de Marchis1
- Johanna Hawkeslowe (Sr.)1
- Johannes Tostius1
- Johannes von Kastl1
- John Cleseby1
- John Eyr1
- John Frederick II of Saxony1
- John Gage1
- John Skyrrow1
- John de Mowbray, 2nd Baron Mowbray1
- John of Glastonbury1