- Italy--Tuscany1
- Italy--Umbria1
- Italy--Veneto1
- Italy--Verona1
- Italy--Villanova Monteleone1
- Izmīrī, Muṣṭafá ibn Rajab, active 17th century1
- Iḥyāʼ ʻulūm al-dīn (Ghazzālī)1
- Iṣfahānī, Maḥmūd ibn ʻAbd al-Raḥmān, 1275 or 1276-1348 or 1349. Tashyīd al-Qawāʻid1
- Jaghmīnī, Maḥmūd ibn Muḥammad, -1221?1
- Jaina mythology1
- James, the Greater, Saint1
- Jamʻ bayna al-ṣaḥīḥayn (Ḥumaydī, Muḥammad ibn Fattūḥ)1
- Jawharat al-tawḥīd (Laqānī, Ibrāhīm ibn Ibrāhīm)1
- Jawī Zādah, Muḥammad ibn Ilyās, -1547 or 1548. Risālah fī al-masḥ ʻalá al-khuffayn1
- Jean, de Verdun1
- Jesuits1
- Jewelry1
- Jewish astrology1
- Jewish children1
- Jewish chronology1