Names
- International Association of Chiefs of Police.1
- Jaques, Norman.1
- Javitz, Jacob K. (Jacob Koppel), 1904-1
- Johnson, Lyndon B. (Lyndon Baines), 1908-1973.2
- Juliana, Queen of the Netherlands, 1909-2004.1
- Junior Achievement.1
- Kappel, Frederick R., 1902-1
- Kefauver, Estes, 1903-1963.1
- Kelly, Harry F. (Harry Francis), 1895-1971.1
- Kennedy, Edward M. (Edward Moore), 1932-2009.1
- Kennedy, John F. (John Fitzgerald), 1917-1963.1
- Kister, Frederick.1
- Ku Klux Klan (1915-)1
- La Guardia, Fiorello H. (Fiorello Henry), 1882-1947.1
- Leary, Timothy, 1920-1996.1
- Lennon, John, 1940-1980.1
- Leonard, Donald S. (Donald Sparling), 1903-19761
- Leonard, Donald S. (Donald Sparling), 1903-1976.1
- Liebold, Ernest G., 1884-1
- Lohbeck, Donald, 1917-1