Author
- Isaac the Blind1
- Isaak Aaron Ettinger1
- Isaak ben Meïr from Düren1
- Israel Alnaqua1
- Israel Yaakov Algazi1
- Issachar ben Mordecai ibn Susan1
- Jacob Berab1
- Jacob Jacobke Heilprin1
- Jacob Meyer1
- Jacob ben David ben Yom Tov1
- Jacob ben Jacob, ha-Kohen, -approximately 12701
- Jacob ben Machir ibn Tibbon1
- Jacob ben Reuben ibn Zur1
- Jacob ibn Habib1
- Jewish prayers1
- Jews1
- Joachim Heinrich Campe1
- Johannes de Sacrobosco1
- Jonathan Eybeschutz1
- Joseph Nasi1