- Lord's Supper--Catholic Church--History of doctrines1
- Manuscript fragments1
- Manuscript waste1
- Manuscripts, Greek1
- Manuscripts, Greek (Medieval and modern)1
- Manuscripts, Judeo-Arabic1
- Manẓūmah al-Bayqūnīyah (Bayqūnī, Ṭāhā ibn Muḥammad)1
- Maqdisī, ʻAbd Allāh ibn ʻAfīf al-Dīn, d. 13361
- Mary, Blessed Virgin, Saint1
- Mashāriq al-anwār (Ṣaghānī, al-Ḥasan ibn Muḥammad)1
- Masjid al-Aqṣá (Jerusalem)1
- Masnavis, Turkish1
- Mathematics, Arab1
- Maḥberet (Mĕnaḥem ben Saruq)1
- Meat inspection (Jewish law)1
- Medicine, Magic, mystic, and spagiric--Formulae, receipts, prescriptions1
- Menorah1
- Metaphysics1
- Metaphysics (Aristotle)1
- Michigan--Kalamazoo1