Name
- Kingston, Richard, `Dr' intelligence agent1
- Kneller, Godfrey, Baronet1
- Knights of Jesus1
- Kueffer, Johann1
- L'Amy, Hugh1
- La Faille, Charles de, merchant of Antwerp1
- La Haye, Denis de, Seigneur de Ventelay, French diplomat1
- La Tour d'Auvergne, Henri de, 1st Duke of Bouillon and Prince of Sedan1
- Laet, Johannes de1
- Lake, Thomas, Secretary of State1
- Lee, Robert, of Binfield1
- Leedes, Thomas, English Catholic exile1
- Legge, George, 1st Baron Dartmouth, naval officer, c 1647-16911
- Leke, Robert, 3rd Earl of Scarsdale1
- Lennard, Henry, 12th Baron Dacre, politician, 1570-16161
- Lennard, Richard, 13th Baron Dacre, 1596-16301
- Leo X, Pope, 1475-15211
- Lesley, John, Bishop of Ross, historian, and conspirator, 1527-15961
- Lock, Thomas, Keeper of the Privy Council records1
- Loigny, —, at Paris1