- Mass (Music)1
- Mas̲navī (Jalāl al-Dīn Rūmī, Maulana)1
- Materia medica1
- Materia medica, Vegetable1
- Maxims1
- Mayenne, Charles de Lorraine, Duc de, 1554-16111
- Maḥzor. High Holidays1
- Meat inspection (Jewish law)1
- Medical formularies1
- Medici, Alessandro de', 1510-15371
- Medici, House of1
- Medici, Lorenzo de', 1449-14921
- Medicinal plants1
- Medicine, Ancient1
- Medicine, Arab1
- Medina Sidonia, Alonso Pérez de Guzmán, duque de, 1550-16191
- Medina Sidonia, Juan Alonso de Guzmán, Duque de, -15581
- Medina, Francisco de, 1544-16151
- Memory1
- Meneses, Pedro de, Conde de Vila Real, -14371