- Jerome, Saint, -419 or 4201
- Jewelry--Religious aspects--Islam1
- Jewish interpretations1
- Jewish merchants1
- Jiménez de Cisneros, Francisco, 1436?-15171
- John II, King of Aragon, 1397-14791
- Judaism1
- Julian, of Eclanum, Bishop, 380-approximately 4551
- Julii family1
- Jumʻah1
- Jurjānī, ʻAlī ibn Muḥammad, al-Sayyid al-Sharīf, 1340-14131
- Jurjānī, ʻAlī ibn Muḥammad, al-Sayyid al-Sharīf, 1340-1413. Ḥāshiyah ʻalá Sharḥ Mukhtaṣar al-Muntahá1
- Jāmī, 1414-14921
- Kamāl al-Dīn Muḥammad ibn Muḥammad, -1418. Naẓm Nukhbat al-fikar fī muṣṭalaḥ ahl al-athar1
- Kinot1
- Kyi︠e︡vo-Pechersʹka lavra1
- Kāfiyah (Ibn al-Ḥājib, ʻUthmān ibn ʻUmar)1
- Ladino literature1
- Ladino poetry1
- Language and languages--Philosophy1