Name
- Linden, Diederich Wassel, MD; Mineralogist1
- Linnaeus, Carl, Swedish botanist; of Sloane MS 40541
- Long, Robert, of Add MS 285391
- Lorimer, John, MD1
- Lovell, Robert1
- Lowes, Captain1
- Lubomirski, Xavier, Prince1
- Lyttelton, Charles, DD, FRS, Bishop of Carlisle1
- Mackenzie, C-, Dr1
- Mackenzie, Murdoch1
- Mackey, Spring1
- Magalhaens, Joao Hyacinthe, Abbade1
- Manetti, Saverio, Professor of Medicine and Botany at Florence1
- Mangor, Elovius, of Copenhagen1
- Martin, John, of Add MS 285391
- Martin, William, of Add MS 285391
- Martyn, Thomas, Rector of Pertenhall; Professor of Botany at Cambridge1
- Marx, M- Jacob1
- Maskelyne, Nevil, DD, FRS; Astronomer Royal1
- Mason, Charles, DD, FRS; Woodwardian Professor at Cambridge1