Author
- Isaac Albalag1
- Isaac Israeli ben Joseph1
- Isaac Israeli ben Solomon1
- Isaac Lattes1
- Isaac Lopez1
- Isaac Sasportas1
- Isaac ben Joseph of Corbeil1
- Isaac ibn Ezra1
- Isaac ibn Ghiyyat1
- Isaac the Blind1
- Isaak Aaron Ettinger1
- Isaak ben Meïr from Düren1
- Isabella I of Castile1
- Isaiah di Trani1
- Iskandar Rūmī1
- Ismail al-Isfahani1
- Ismail bin Mohammad Rizi1
- Ismāʻīl Jarrāḥī1
- Ismāʻīl Mufīd1
- Ismāʻīl Qarah Kamāl1