Author
- Inayat Khan1
- Innocent I1
- Innocent XI1
- Inquisition Sicily)1
- Iohannes de Ianna1
- Ippolito Libri1
- Irbilī, Aḥmad ibn Mūsá, d. 12251
- Isaac Aboab I1
- Isaac Aboab of Castile1
- Isaac Albalag1
- Isaac Israeli ben Joseph1
- Isaac Israeli ben Solomon1
- Isaac Lattes1
- Isaac ben Joseph of Corbeil1
- Isaac ibn Ezra1
- Isaac ibn Ghiyyat1
- Isaac of Troki1
- Isaac the Blind1
- Isaak ben Meïr from Düren1
- Isabella I of Castile1