Name
- Inglis, Robert Harry, 2nd Baronet, MP, 1786-18551
- Isaacs, Rufus Daniel, 1st Marquess of Reading, Viceroy of India, 1860-19351
- James, Henry, Baron James of Hereford1
- Jeune, Francis Henry, Baron St Helier1
- Junior Imperial League, The1
- Kenyon, George, 2nd Baron Kenyon1
- Keogh, William Nicholas, QC, MP, Irish judge1
- Keppel, George Thomas, 6th Earl of Albemarle1
- Keppel, William Coutts, Viscount Bury, 7th Earl of Albemarle 18911
- Knox, Constance Elizabeth, wife of Uchter 5th Earl of Ranfurly1
- Lankester, Edwin Ray, KCB, FRS1
- Law, Andrew Bonar, businessman and prime minister, 1858-19231
- Legge, William Walter, 5th Earl of Dartmouth1
- Lennox, Charles, 5th Duke of Richmond and Lennox, né Lennox, politician and army officer, 1791-18601
- Leveson-Gower, Cromartie, 4th Duke of Sutherland1
- Liberal Unionist Party1
- Lindley, Nathaniel, Baron Lindley1
- Lowry-Corry, Montagu William, Baron Rowton1
- Lubbock, John, 1st Baron Avebury, banker, politician, and scientific writer, 1834-19131
- Lumley, Aldred Frederick George Beresford, 10th Earl of Scarbrough1