Benedetto Morpurgo (1928) OP000915
Malcolm Morris (1902-11) OP000916
W.T.G. Morton OP000919
Angelo Mosso (1911) OP000921
Paul Julius Moebius (1907) OP000922
Professeur Monprofit OP000924
Friedrich Müller (1928) OP000934
Johannes Müller OP000935
Wilhelm Müller (1928) OP000936
Wilhelm Müller OP000937
W.S. Muir OP000938
Professeur B. de Nabias OP000942
Nikolaus Nahm OP000944
James Nasmyth OP000945
Bernhard Naunyn (1912) OP000950