Name
- Hawkins, of Add MS 324391
- Henwood, P-1
- Hoffberg, Carl1
- Hoffmann, Georg Franz1
- Hornemann, Jens Wilkin1
- Howse, Joseph, of the Hudson's Bay Company1
- Humboldt, Friedrich Heinrich Alexander, naturalist and explorer, 1769-18591
- Isted, George1
- Jack, William, Dr1
- Jameson, Robert, Regius Professor of Natural History, Edinburgh1
- Jeffrey, Francis, Lord Jeffrey, critic, Lord Advocate1
- Jussieu, Adrien-Henri, botanist, 1797-18531
- Keith, Patrick1
- Ker, Charles Henry Bellenden, of Lincoln's Inn1
- Kerner, André Justin1
- King, Philip Gidley, Governor of New South Wales1
- Kunth, Carl Sigismund1
- Lambert, Aylmer Bourke, botanist, 1761-18421
- Latreille, Pierre André, of Add MS 324401
- Leschenault de la Tour, Louis Théodore, Naturalist1