Author
- Ibn Zaqqa'ah2
- Ibn al-Kharrāṭ2
- Ibn al-Salah2
- Ibn an-Nahhas al-Halabi2
- Ibn ʿAqīl2
- Ikhtiyār al-Dīn ibn Ghiyāth al-Dīn2
- Immanuel Frances2
- Innocent III2
- Isaac Alfasi2
- Isaac ben Mordekhai Kimḥi2
- Isaac of Troki2
- Ishmael ben Abraham Isaac ha-Kohen2
- Ismāʻīl ibn Aḥmad Ibn al-Athīr2
- Ismāʻīl ibn Ibrāhīm İsfendiyaroǧlu2
- Jacob ben Asher2
- Jacopone da Todi2
- Jakob Reifmann2
- Jamāl al-Dīn Khvānsārī2
- Jaʻfar Astarābādī2
- Jaʻfar ibn Khaḍir Janājī2