Author
- Jacob Berab1
- Jacob HaLevi of Marvège1
- Jacob Israel Karmi1
- Jacob Meyer1
- Jacob Saphir1
- Jacob ben David ben Yom Tov1
- Jacob ben Jacob, ha-Kohen, -approximately 12701
- Jacob ben Reuben ibn Zur1
- Jacob ibn Habib1
- Jacob of Serugh1
- Jacobus de Burgo1
- Jacomo Veronese1
- Jacques Bruyant1
- Jacques Millet1
- Jacques de Vitry1
- Jagaddhara1
- Jagannāthacandra1
- Jai Singh II1
- Jakob Reifmann1
- Jakob Wimpfeling1