Names
- Kelsey, Francis W. (Francis Willey), 1858-1
- Kelsey, Francis Willey, 1858-19271
- Kennedy, John F. (John Fitzgerald), 1917-1963.1
- King, William Lyon Mackenzie, 1874-1950.1
- Kipke, Harry G., 1899-1972.1
- Knappen, Loyal Edwin, 1854-1930.1
- Knight, John Shively, 1894-1981.1
- Knudsen, William S., 1879-1948.1
- Koch, Theodore Wesley, 1871-1941.1
- Ku Klux Klan (1915-)1
- La Guardia, Fiorello H. (Fiorello Henry), 1882-1947.1
- 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
- Lawton, James Frederick, 1888-1969.1
- League to Enforce Peace.1