Name
- Lussan, Zelia de1
- Lygon, William, 7th Earl Beauchamp1
- Lyttelton, Alfred, sportsman and politician, 1857-19131
- Lyttelton, George William, 4th Baron Lyttelton1
- Lyttelton, Sarah, governess to children of Queen Victoria1
- MacDonald, James Ramsay, Prime Minister, 1866-19371
- MacKenzie, Morell, physician1
- MacWhirter, John, writer1
- Mackay, James Lyle, 1st Earl of Inchcape, 1852-19321
- Macmillan, Frederick Orridge, publisher1
- Macready, William Charles, actor1
- Maeterlinck, Maurice Polydore Marie Bernard, author1
- Maggs, Ernest U, of Maggs Bros booksellers1
- Manners, John James Robert, Lord John Manners, 7th Duke of Rutland1
- Manning, Henry Edward, Cardinal, RC Archbishop of Westminster1
- Marie Louise, Princess, wife of Prince Aribert of Anhalt, 1872-19561
- Martin, Helena Saville, née Faucit wife of Sir T Martin, actress1
- Martin, N1
- Martin, Theodore, KCB Parliamentary agent and translator1
- Martin-Harvey, John, theatrical producer1