Author
- Hugh of Fouilloy1
- Hugh of Saint Victor1
- Hugh of Saint-Cher1
- Jacobo Bellenden1
- Jacobus de Voragine1
- Jacopone da Todi1
- Johanna Hawkeslowe (Sr.)1
- Johannes Paulus1
- Johannes von Werdea1
- John Cassian1
- John Cleseby1
- John Davnay1
- John Gage1
- John Halgren of Abbeville1
- John of Saxony1
- John of Wales1
- Josephus1
- Juan Gallo1
- Juan Martínez Silíceo1
- Juana I of Castile1