Author
- John Scottowe1
- John Sergeant1
- John Shirley1
- John Skyrrow1
- John Tiptoft, 1st Earl of Worcester1
- John Versor1
- John Wycliffe2
- John XXI1
- John XXII2
- John Zonaras1
- John de Beauchesne2
- John de Breton1
- John de Mowbray, 2nd Baron Mowbray1
- John de Seccheville1
- John of Damascus1
- John of Garland2
- John of Genoa2
- John of Glastonbury1
- John of Howden1
- John of Ibelin1