- Materia medica, Vegetable3
- Mathematics, Greek3
- Medici, Lorenzo de', 1449-14923
- Merkava3
- Metal clasps3
- Mishnah. Avot3
- Monasticism and religious orders for women3
- Muqniʻ (Ibn Qudāmah, Muwaffaq al-Dīn ʻAbd Allāh ibn Aḥmad)3
- Muqniʻ fī ʻilm al-jabr wa-al-muqābalah (Ibn al-Hāʼim, Aḥmad ibn Muḥammad)3
- Muṭarrizī, Nāṣir ibn ʻAbd al-Sayyid, 1144-1213. Miṣbāḥ3
- Mysticism--Judaism3
- Officium pro defunctis (Catholic Church)3
- Old age3
- Oratory3
- Paoli, Stefano3
- Paolo, Stefano di3
- Pastoral poetry, Latin3
- Penitentials3
- Penmanship3
- Pentecost3