- Mass1
- Massachusetts1
- Massachusetts--Boston28
- Massachusetts--Northampton2
- Massachusetts--Wellesley9
- Massachusetts--Williamstown1
- Massaran, Isaac de1
- Materia medica2
- Mathematical recreations1
- Mathematics2
- Mathematics, Arab5
- Mathematics--Study and teaching1
- Matthei, Bernardino1
- Matthias I, King of Hungary, 1443-14901
- Matīṭī, ʻAlī ibn ʻAbd Allāh, -1104. Kitāb al-Tabṣirah1
- Mawlānāʹzādah, Aḥmad ibn Maḥmūd, active 14th century. Sharḥ Hidāyat al-ḥikmah1
- Mawḍūʻāt (Ibn al-Jawzī, Abū al-Faraj ʻAbd al-Raḥmān ibn ʻAlī)1
- Mawṣilī, Muḥammad ibn al-Ḥusayn, -1334 or 13351
- Maximilian I, Holy Roman Emperor, 1459-15191
- Maxims1