- Ladd, Charles R.
- Laforme, Vincent
- Lambert, Thomas Ricker
- Lambert, William Henry
- Lane, Saurin Eliot
- Lang, Benjamin Johnson
- Larrabee, John
- Lasker, Raphael
- Lathrop, John
- Lavallee, Calixa
- Lawrence, Asa S.
- Lawrence, Samuel Crocker
- Leach, George Carroll
- Leach, Giles Luther
- Leach, James Cushing
- Lee, Andrew
- Leighton, John William
- Leighton, Nicholas Winfield Scott
- Leland, Luther Erving
- Leonard, Spencer
- Lewis, Charles Dudley
- Lewis, John Jay
- Lilley, Charles Sumner
- Lilly, Alfred Theodore
- Lincoln, Frederic Walker
- Lincoln, Leontine
- Listemann, Bernhard Friedrich Wilhelm
- Litchfield, George Allen
- Little, Samuel
- Locke, Warren Edgar
- Lodge, Henry Cabot
- Lombard, Nathan C.
- Long, John Davis
- Loring, George Bailey
- Lothrop, Daniel
- Lovell, Benjamin S.
- Lovell, Clarence P.
- Lovering, Henry Bacon
- Lovering, Joseph
- Lowell, James Russell
- Lowell, John
- Lyman, Edward E.
- Lyman, Robert Worthington
