- Marucelli, Francesco, 1625-17031
- Mary, Queen of Scots, 1542-15871
- Mathematical recreations1
- Mayenne, Charles de Lorraine, Duc de, 1554-16111
- Medea, consort of Aegeus, King of Athens (Mythological character)1
- Medici, Alamanno de'1
- Medici, Bernardo de'1
- Medici, Elisabetta de'1
- Medici, Fabrizio de'1
- Medici, Francesca de'1
- Medici, Giulio de'1
- Medici, Ottavia Altoviti1
- Medina, Francisco de, 1544-16151
- Meditations1
- Middle Ages1
- Military art and science1
- Mints1
- Monastic and religious life of women1
- Monasticism and religious orders for women--Rules1
- Monasticism and religious orders--Rules1