Author
- Izz al-Din ibn Hibatullah ibn Abi l-Hadid1
- Jacob ben David ben Yom Tov1
- Jacob ibn Habib1
- Jacobo Bellenden1
- Jean Bénard1
- Jean de Bernuy1
- Jerónimo Román y Zamora1
- Jiménez de Enciso, Andrés1
- Joachim Bendel1
- Joan Martines1
- Joanna of Austria, Princess of Portugal1
- Johann Neudörffer the Elder1
- Johannes Lemp1
- Johannes Mellarinus1
- Johannes Schöner1
- John Crosse1
- John Harington1
- John de Beauchesne1
- John of Ibelin1
- Josef ibn Tabul1