- Manuscripts, Syriac6
- Manuscripts, Yiddish1
- Manār al-anwār fī al-uṣūl (Nasafī, ʻAbd Allāh ibn Aḥmad)2
- Marbits Torah1
- Mary, Blessed Virgin, Saint1
- Mary, Blessed Virgin, Saint, and the church1
- Mary, Blessed Virgin, Saint, in the liturgy--Orthodox Eastern Church1
- Masorah6
- Mathematics4
- Mathematics--Study and teaching1
- Maʻaśeh merkavah1
- Maḥbūbī, Maḥmūd ibn ʻUbayd Allāh, -1344 or 1345. Wiqāyat al-riwāyah fī masāʼil al-Hidāyah1
- Maḥzor2
- Maḥzor. High Holidays1
- Maḥzor. Yom Kippur2
- Medicine4
- Medicine, Ancient1
- Medicine, Arab1
- Medicine, Magic, mystic, and spagiric9
- Medicine, Magic, mystic, and spagiric--Formulae, receipts, prescriptions3