Name
- Luque, Juan Moreno, Colonel of Madrid1
- MacCarthy, B F, of University College Dublin1
- MacDermot, B C, of the Foreign Office1
- MacKintosh, James Macalister, public health teacher and administrator1
- Malpas, Percy, surgeon1
- Marañón, G, of Castellana Italy1
- Mariotti, Maurizio, Italian surgeon1
- Marotta, Domenico, Director General Instituto Superiore di Sanità Rome1
- Martin, David Christie, Kt, scientific administrator1
- Massigly, René, of the French Embassy London1
- Matilla, Valentin, Secretary Real National Academy of Medicine1
- Mattei, Charles, member of the National Academy of Medicine1
- Maxey, Evelyn G, of the Directorate of Medical Supplies Ministry of Supply1
- Mayhan, E G?, Biochemicals Director The Distillers Company Ltd1
- McAteer, J D, Official Secretary to the Australian High Commissioner London1
- McCarthy, Alex A, Registrar National University of Ireland1
- McClean, S D, of the Anglo-Iranian Oil Company1
- McEwan, Wallace M, bacteriologist1
- McKean, G Thomas, of the American Journal of Clinical Pathology1
- McLeod, James Walter, Professor Emeritus Department of Pathology Leeds1