Author
- Isaac Lopez1
- Isaac Luria1
- Isaac Newton1
- Isaac Sasportas1
- Isaac of Troki1
- Ismāʻīl Mufīd1
- Israel Alnaqua1
- Israel Yaakov Algazi1
- Isḥāq ibn Ibrāhīm Fārābī1
- Izz al-Din ibn Hibatullah ibn Abi l-Hadid1
- Jacob Israel Karmi1
- Jacob Meyer1
- Jacob ben Reuben ibn Zur1
- Jaghmini1
- Jai Singh II1
- Jalal al-Din Mohammad Tabrizi1
- Jaʻfar Astarābādī1
- Jean-Baptiste Hauchamps1
- Jewish Community of Amsterdam, Netherlands1
- Jewish Community of Padua, Italy1