- Islamic philosophy1
- Islamic sects1
- Islamic sermons1
- Isnawī, ʻAbd al-Raḥīm ibn al-Ḥasan, 1305-13701
- Italian literature1
- Italy--Aquileia1
- Italy--Rome1
- Italy--Siena1
- Italy--Vicenza1
- Jerome, Saint, -419 or 4201
- Jewish interpretations1
- Jewish interpretations of Jesus Christ1
- Jewish merchants1
- Judaism1
- Julian, of Eclanum, Bishop, 380-approximately 4551
- Julii family1
- Jurjānī, ʻAlī ibn Muḥammad, al-Sayyid al-Sharīf, 1340-14131
- Justa, Saint, -approximately 2871
- Kemalpaşazade, 1468 or 1469-1534. Risālah fī al-haykal al-insānī1
- Khamrīyah (Ibn al-Fāriḍ, ʻUmar ibn ʻAlī)1