- Islamic magic2
- Isnawī, ʻAbd al-Raḥīm ibn al-Ḥasan, 1305-1370. Sharḥ al-Minhāj2
- Italy--Naples2
- Jamʻ al-jawāmiʻ fī al-uṣūl (Subkī, Tāj al-Dīn ʻAbd al-Wahhāb ibn ʻAlī)2
- Jewish calendar2
- Jewish ethics2
- Jewish magic2
- Jews--Dietary laws2
- Jews--Medicine2
- Judaism--Controversial literature2
- Judaism--Liturgy2
- Jugurthine War (111-105 B.C.)2
- Jurjānī, ʻAlī ibn Muḥammad, al-Sayyid al-Sharīf, 1340-1413. Ḥāshiyah ʻalá Lawāmiʻ al-asrār2
- Jāmiʻ al-Azhar2
- Kanz al-daqāʼiq (Nasafī, ʻAbd Allāh ibn Aḥmad)2
- Kashshāf (Zamakhsharī, Maḥmūd ibn ʻUmar)2
- Khaṭīb al-Baghdādī, Abū Bakr Aḥmad ibn ʻAlī, 1002-1071. Asmāʼ al-mubhamah fī al-anbāʼ al-muḥkamah2
- Knowledge, Theory of2
- Land tenure2
- Latin language, Medieval and modern2