- Jammāʻīlī, ʻAbd al-Ghanī ibn ʻAbd al-Wāḥid, 1146-12031
- Judgment Day (Islam)1
- Jāmiʻ al-ṣaḥīḥ (Bukhārī, Muḥammad ibn Ismāʻīl)1
- Law commentaries1
- Leather doublures1
- Malikites1
- Manuscripts, Latin1
- Manuscripts, Latin (Medieval and modern)1
- Manuscripts, Medieval1
- Manuscripts, Persian1
- Manuscripts, Renaissance1
- Masorah1
- Mawrid al-ẓamʼān (Kharrāz, Muḥammad ibn Muḥammad)1
- Metaphysics1
- Mineralogy1
- Miscellanea1
- Mukhtaṣar (Khalīl ibn Isḥāq al-Jundī)1
- Muslim saints1
- Muslim scholars1
- Musnad (Ibn Ḥanbal, Aḥmad ibn Muḥammad)1