Name
- Mawby, R A J, of the Distributist League1
- Maycock, Alan Lawson, Keeper of the Old Library Magdalene College Cambridge1
- Maynard, Sara, wife of T Maynard1
- McCarthy, Lillah, OBE, actress, first wife of H G Granville-Barker1
- McLachlan, Laurentia Margaret, OSB, Abbess of Stanbrook1
- McLaren, Moray David Shaw, author and broadcaster1
- McNeill, Josephine, wife of James McNeill Governor-General of the Irish Free State1
- McNeill-Moss, Geoffrey, Major writer1
- Mealand, Richard, of 'Nash's-Pall Mall Magazine'1
- Mechanical-Copyright Protection Society Ltd, 1924-1
- Mennell, James Beaver, , physician1
- Meredith, George, novelist, 1828-19091
- Merrick, Leonard, author1
- Merriman, White & Co, solicitors1
- Merry del Val y Zulueta, Alfonso de, Marques Spanish diplomatist1
- Merry del Val, Raphael, Cardinal, Sec of State to the Pope1
- Methuen, Algernon, publisher1
- Metta, Vasudeo B1
- Meynell, Alice Christina Gertrude, née Thompson poet1
- Meynell, Laurence Walter, author1