Name
- Kerr, William John, 5th Marquess of Lothian1
- Ketteler, Baronne; née Galen1
- Keyserlingk, Heinrich Christian, Baron1
- King, John, of Add MS 355401
- Kinnen, Lewis, Captain1
- Kinsbergen, Hester, wife of Jan Hendrick Kinsbergen, Dutch admiral1
- Klopman, Baron1
- Knox, Robert, MD1
- Kohary, Madame Josephe1
- Koller, Count1
- Köbler, Anna Sophia1
- Königsbrun, Franz Xaver, Baron1
- La Sambuca, Chevalier1
- Laidlaw, Walter1
- Lambert, Abbé; Chanoine à Reims1
- Larrey, Thomas Isaac, Count, Dutch Minister of State1
- Las Casas1
- Le Tonnelier, Louis Auguste, Baron de Breteuil, French envoy at Vienna, etc1
- Lees, John, Secretary to the Irish Post Office1
- Leman, Thomas, of Add MS 355271