Author
- Jaʻfar Astarābādī1
- Jaʻfar Vāʻiẓ1
- Jean Bénard1
- Jean Dupin1
- Jean Marot1
- Jean de Malian1
- Jean de Meun1
- Jean de Roquetaillade1
- Jerome de Prado1
- Jerónimo Román y Zamora1
- Jewish Community of Amsterdam, Netherlands1
- Jewish Community of Padua, Italy1
- Jewish Community of Pitigliano, Italy1
- Jewish community of unidentified city, Italy1
- Jews1
- Joan Martines1
- Joannes Francis Binus1
- Joannes Oliva1
- Joannes de Crivelli1
- Joham de Vernoils1