- Italy--Perugia (Province)2
- Italy--Pinerolo2
- Italy--Reggio Emilia (Province)2
- Italy--Tortona2
- Italy--Treviso2
- Italy--Volterra2
- Iʻrāb ʻan qawāʻid al-iʻrāb (Ibn Hishām, ʻAbd Allāh ibn Yūsuf)2
- Iḥyāʼ ʻulūm al-dīn (Ghazzālī)2
- Iṣfahānī, Maḥmūd ibn ʻAbd al-Raḥmān, 1275 or 1276-1348 or 1349. Tashyīd al-Qawāʻid2
- Jaʻbarī, Arslān ibn Yaʻqūb, -1300. Risālat al-tawḥīd2
- Jaʻbarī, Ibrāhīm ibn ʻUmar, 1242 or 1243-1331 or 1332. Wāḍiḥah fī tajwīd al-Fātiḥah2
- Jerome, Saint, -419 or 4202
- Jewish magic2
- Jewish poetry2
- Jewish sermons2
- Jewish sermons, Hebrew2
- Jews, Italian2
- Jews--Dietary laws2
- Karaites2
- Kashshāf (Zamakhsharī, Maḥmūd ibn ʻUmar)2