Author
- Hernando del Pulgar1
- Hugh of Balma1
- Humphrey Wellys1
- Ibn Hisham Al-Ansari1
- Ibn Kemal1
- Ibn Zanjalah1
- Ibn al-Mulaqqin1
- Ibrāhīm Ibn ʻAbd al-Ṣamad1
- Ibrāhīm ibn ʻAlī Qalqashandī1
- Imbert Feutrier1
- Isaac Alfasi1
- Isaac the Blind1
- Isabella I of Castile1
- Ismāʻīl Jarrāḥī1
- Ismāʻīl ibn Abī Bakr Ibn al-Muqrī1
- Jacob ben Asher1
- Jacob ben David ben Yom Tov1
- Jacob ibn Habib1
- Jacobus Dinetus1
- Jaghmini1