- Mathias, Thomas James
- Maturin, Charles Robert
- Maurice, Frederick Denison
- Maxwell, William Hamilton
- Max-Müller, Friedrich
- May, Thomas
- May, Sir Thomas Erskine, 1st Baron Farnborough
- Mayne, Jasper
- Mayne, John
- Melville, Herman
- Melville, James
- Melville, Sir James
- Meredith, George
- Meres, Francis
- Merivale, Charles
- Merriman, H. Seton
- Meston, William
- Mickle, William Julius
- Middleton, Conyers
- Middleton, Thomas
- Mill, James
- Mill, John Stuart
- Miller, Hugh
- Miller, Thomas
- Milman, Henry Hart
- Milnes, R. Monckton
- Milton, John
- Minot, Laurence
- Minto, William
- Mitchell, John
- Mitford, Mary Russell
- Mitford, William
- Moir, David Macbeth
- Monboddo, James Burnett, Lord
- Montagu, Elizabeth (Robinson)
- Montagu, Lady Mary Wortley (Pierrepont)
- Montgomerie, Alexander
- Montgomery, James
- Montgomery, Robert
- Moore, Edward
- Moore, John
- Moore, Thomas
- More, Hannah
- More, Henry
- More, Sir Thomas
- Morgan, Lady (Sydney Owenson)
- Morier, James Justinian
- Morison, James Cotter
- Morley, Henry
- Morris, Sir Lewis
- Morris, William
- Morton, Thomas
- Motherwell, William
- Motley, John Lothrop
- Moultrie, John
- Mulock, Dinah Maria (Mrs. Craik)
- Munday, Anthony
- Mure, William
- Murphy, Arthur
- Murray, Lindley
- Myers, Frederic William Henry
- Nabbes, Thomas
- Nairne, Carolina (Oliphant), Baroness
- Napier, Mark
- Napier, Sir William Francis Patrick
- Nash, Thomas
- Nayler, James
- Neal, John
- Neaves, Charles, Lord
- Neckham, Alexander
- Newcastle, Margaret, Duchess of
- Newman, Francis William
- Newman, John Henry
- Newton, Sir Isaac
- Newton, John
- Nichol, John
- Noel, Hon. Roden Berkeley Wriothesley
- Norris, John
- North, Sir Thomas
- Norton, Caroline Elizabeth Sarah (Sheridan)
- Norton, Charles Eliot, Ll.D., D.C.L., etc.
- Occam or Ockham, William
- Occleve
- Ockley, Simon
- O'Keeffe, John
- Oldham, John
- Oldmixon, John
- Oldys, William
- Oliphant, Laurence
- Oliphant, Mrs. Margaret Oliphant (Wilson)
- Opie, Mrs. Amelia (Alderson)
- Ordericus Vitalis
- Orm, or Ormin
- Orme, Robert
- Orrery, Roger Boyle, 1st Earl of
- O'Shaughnessy, Arthur William Edgar
- Otway, Cæsar
- Otway, Thomas
- Ouida
- Outram, George