Author
- Jacob Israel Karmi1
- Jacob Meyer1
- Jacob ben Machir ibn Tibbon1
- Jacob ben Reuben ibn Zur1
- Jagannatha Panditaraja1
- Jalal al-Din Mohammad Tabrizi1
- Jamshīd al-Kāshī1
- Jamāl al-Dīn Khvānsārī1
- Jayadeva1
- Jayakr̥ṣṇa1
- Jaʻfar Astarābādī1
- Jewish Community of Amsterdam, Netherlands1
- Jewish Community of Padua, Italy1
- Jewish Community of Pitigliano, Italy1
- Jewish community of unidentified city, Italy1
- Jews1
- Joshua ben Israel Benveniste1
- José Antonio de Alzate y Ramírez1
- Juan Antonio de Hozes Sarmiento1
- Judah Leib Prossnitz1