Name
- Kennedy, Hugh, Irish Chief Justice1
- MacAlister, Donald, 1st Baronet, physician, 1854-19341
- MacDonnell, Antony Patrick, Baron MacDonnell1
- Macdonald, John Archibald Murray, PC MP1
- Maconchy, John Arthur, of Rathmore1
- Madden, Dodgson Hamilton, judge1
- Madden, John Howard, Rector of Mountrath1
- Martin, Alexander, DD, Moderator of the General Assembly of the United Free Church of Scotland1
- Mary, Queen Consort of King George V, 1867-19531
- Maxse, Leopold James, journalist and political activist; editor of 'National Review', 1864-19321
- Maxwell, John Grenfell, General PC, GCB1
- McHugh, Charles, Bishop of Derry, 1856-19261
- McSweeny, Eithne, Miss Irish teacher1
- Miller, Robert, Bishop of Cashel1
- Money, Horace, of Rathfarnham1
- Moon, William, inventor of type for the blind1
- Morrow, Robert Moore, Rector of Billy1
- Murray, John, KCVO publisher, d 19281
- Oliver, Charles Deane, of Wicklow1
- Peacocke, Joseph Ferguson, theologian and Archbishop of Dublin, 1835-19161