Name
- Le Cat, Claude Nicolas1
- Le Maignen of Rouen1
- Lee, Arthur, MD, FRS1
- Lesser, Friedrich Christian1
- Lethieullier, Smart, of Aldersbrook, county Essex1
- Lewin, John, junior, Mineralogist1
- Limbourg, Jean Phelipe, Physician1
- 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
- Maleek de Werthenfeld, J- T-, Director of Natural History at Brussels1