Name
- Malcolm, Ian Zachary, KCMG, MP2
- Mansbridge, John, artist, son of A Mansbridge2
- Manus, Rosa, Miss official of the International Peace Campaign2
- Marchant, James, KBE2
- Marriott, John Arthur Ransome, MP, historian2
- Marsh, Robert H, Sec The National Association of Building Societies2
- Mason, David Marshall, MP, founder Sound Currency Association2
- Matejka, Gerda, wife of Dr V Matejka2
- Maugham, Frederic Herbert, 1st Viscount Maugham2
- Max-Muller, William Grenfell, GBE, diplomatist2
- McCallum, Ronald Buchanan, historian and Master of Pembroke College Oxford2
- Mello-Franco, Afranio de, Brazilian diplomatist2
- Merry del Val y Zulueta, Alfonso de, Marques Spanish diplomatist2
- Millin, Sarah Gertrude, author2
- Mills, David H, of the League of Nations Union2
- Milner, Alfred, 1st Viscount Milner, public servant and politician, 1854-19252
- Monbrisson, H de, of Neuilly St James France2
- Montagu, Edwin Samuel, statesman, 1879-19242
- Morrow, Dwight Whitney, US senator and diplomatist2
- Murray, William Ewart Gladstone, of the BBC2