Name
- Jenkinson, Charles, 10th Baronet 18511
- Jenkinson, Robert Banks, Baron Hawkesbury, 2nd Earl of Liverpool, Prime Minister, 1770-18281
- Jodrell, Paul, MD1
- Jodrell, Richard Paul, dramatist1
- Jubele, Franz Fidelis, Tyrolese leader1
- Kent, William1
- King, George, 3rd Earl of Kingston1
- Lascelles, Edward, 1st Earl of Harewood 18121
- Latham, Henry, Mayor of Dover1
- Law, Edward, 1st Baron Ellenbrough, Lord Chief Justice1
- Lennox, Charles, 4th Duke of Richmond and Lennox1
- Litchfield, Henry Charles, Treasury Solicitor1
- Littleton, Edward John, 1st Baron Hatherton 18351
- Lopes, Manasseh Masseh, 1st Baronet1
- Lowther, William, Viscount Lowther 1802, 1st Earl of Lonsdale 18071
- Lushington, Stephen Rumbold, Secretary to the Treasury and (1827) Governor of Madras1
- Mac-, J-1
- MacDonald, John, Lieutenant-Colonel FRS1
- Macdonell, Alexander Ranaldson, Colonel; self-styled 16th Baron of Glengarie and Clanranald1
- Madan, Spencer, Bishop of Peterborough1