- Medici, Giovanni Giacomo de', marchese di Marignano, 1495-15551
- Medici, Giuliano de', 1453-14781
- Medici, Giulio de'1
- Medici, Niccolò de'1
- Medici, Nicolo de'1
- Medici, Ottavia Altoviti1
- Medici, Piero di Lorenzo de', 1472-15031
- Medicine, Medieval1
- Medina, Francisco de, 1544-16151
- Meditations1
- Mediterranean Sea--Adriatic Sea1
- Mercenary troops1
- Middle Ages1
- Middle East--Jerusalem (Latin Kingdom)1
- Mikveh1
- Military art and science1
- Military campaigns1
- Miniature painting1
- Mints1
- Missouri--Saint Louis1