Name
- Jons, Abbé1
- Ketelhodt, Baron, of Berlin1
- Khevenhüller, Count, Austrian Commissary-General in Italy1
- King, John, Under-Secretary of State, Home Office; of Add MS 468371
- La Combe, Abbé1
- Leekeny, Friedrich Johann Heinrich, of Magdeburg1
- Lefferer, Thomas, Secretary to Lord Galway1
- Leonetti, Felice Antonio, Corsican politician1
- Leroy, Secretary to Comte d'Antraigues1
- Ley, George, of Trefusis Mylor1
- Lindsey, Thomas, of Add MS 468221
- Liston, Robert, diplomatist; GCB 18161
- Lonjamet, French royalist1
- Lorraine, Ferdinand III, Grand Duke of Tuscany, prince-elector, 1769-18241
- Louis XVI, of France1
- Lovell, Edwin, solicitor, of Wells, county Somerset1
- Luard, William, of Genoa1
- Lángara y Huarte, Juan, Spanish Admiral1
- Macartney, George, Earl Macartney, of Add MS 468251
- Macpherson, John, Baronet , Governor-General of India 1785-17861