Names
- Knapp, Andrew B.1
- Knapp, George1
- Knapp, George.1
- Knappen, Loyal Edwin, 1854-1930.1
- Knight, John Shively, 1894-1981.1
- Knights Templar (Masonic order)1
- Knox, Frank, 1874-1944.1
- Koch, Theodore Wesley, 1871-1941.1
- Krock, Arthur, 1886-1974.1
- Ku Klux Klan (1915-)1
- La Follette, Robert M. (Robert Marion), 1855-1925.1
- LaFollette, Philip Fox, 1897-1965.1
- Labadie, Jo, 1850-1933.1
- Labadie, Joseph1
- Lamont, Robert Patterson, 1867-1948.1
- Lane, Alfred C. (Alfred Church), 1863-1
- Lane, Robert Porter, 1891-1953.1
- Lansing, Robert, 1864-1928.1
- Larue, George R. (George Roger), 1882-1
- Laski, Harold Joseph, 1893-1950.1