- Latimer, S. L. (Samuel Lowry), 1891-19751
- Leadership1
- League of Women Voters of Spartanburg1
- Legislative bodies1
- Lewith, Henry F., 1876-19261
- Liberty Bell1
- Limestone Mills1
- Lions International1
- Livingston, Otis W. (Otis Withers), 1897-19731
- Llewellyn, A. Stanley (Albert Stanley), 1887-19601
- Lobbying1
- Loyalty oaths1
- Lyles-Ford Tri-County Power Authority1
- Lyles-Ford Tri-County Power Authority (S.C.)1
- March of Dimes1
- Marine resources development1
- Marshall, George C. (George Catlett), 1880-19591
- Martin, Claude, Mrs.1
- Martin, John Harrison, 1897 - 19751
- Mason, James B. (Mosaic artist)1