- Medici, Giulio de'1
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- Medici, Piero di Lorenzo de', 1472-15031
- Medicinal plants1
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- Medina Sidonia, Alonso Pérez de Guzmán, duque de, 1550-16191
- Medina Sidonia, Juan Alonso de Guzmán, Duque de, -15581
- Medina, Francisco de, 1544-16151
- Mediterranean Region1
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- Menasheh ben Asher, a.b.d. ḳ. Ropshits1
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- Metochites, Theodoros, 1270-13321
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