- Mechanics1
- Medea, consort of Aegeus, King of Athens (Mythological character)1
- Medical astrology1
- Medici, Bastiano de'1
- Medici, Carlo Bernardo Alamanni de'1
- Medici, Elisabetta de'1
- Medici, Fernando de'1
- Medici, Francesca de'1
- Medici, Giuliano de', 1453-14781
- Medici, Giulio de'1
- Medici, Lorenzo de', 1449-14921
- Medici, Niccolò de'1
- Medici, Nicolo de'1
- Medici, Ottavia Altoviti1
- Medici, Piero di Lorenzo de', 1472-15031
- Medicine, Greek and Roman1
- Medicine--Study and teaching1
- Mediterranean Region1
- Meistersinger1
- Melanchthon, Philip, 1497-1560. De officio principum1