- Lee, Noël, 1924-20131
- Lees, Benjamin, 1924-20101
- Leichtling, Avrohom1
- Leifur Thórarinsson, 1934-19981
- Lein, David2
- Lenel, Ludwig1
- Lentz, Daniel, 1942-1
- Leopardi, Giacomo, 1798-18372
- Lerew, Donna1
- Lerner, Bennett1
- Lesbines, Tele1
- Lessard, John, 1920-20032
- Levenson, Emanuel1
- Levenson, Michael6
- Levey, Lauren1
- Levi, Nannette, 1926-20072
- Levin, Monroe, 1923-1
- Levin, Robert D1
- Levine, Gilbert, 1948-1
- Levine, Jeffrey1
- Levine, Jesse, 1940-20081
- Levine, Julius2
- Levitan, Sam, 1913-20031
- Levy, Edward, 1929-20021
- Levy, Frank, 1930-20171
- Levy, Gerardo5
- Lewis, Peter Tod1
- Lewis, Robert Hall, 1926-19961
- Ley, Salvador, 1907-19852
- Li, Bai, 701-7621
- Libove, Charles, 1926-1
- Lichter, Bonnie1
- Lieberman, Barbara1
- Liebling, Joseph1
- Lightner, Helen, 1917-20031
- Ligotti, Albert1
- Lindahl, Gerald (Baritone)1
- List, Garrett3
- Listokin, Robert1
- Lockwood, Annea, 1939-1
- Loft, Abram, 1922-20191
- Lombardo, Robert, 1932-1
- Louwenaar, Karyl1
- Low, Edward1
- Lucarelli, Bert2
- Luening, Otto, 1900-199613
- Lundy, Joyce1
- Lybbert, Donald1
- Lynch, Ynez1
- MacInnis, Donald, 1923-20031
- MacNeice, Louis, 1907-19631
- Macchia, Salvatore2
- Macero, Teo, 1925-20082
- Maclay, Otis1
- Macneil, Alan1
- Makanowitzky, Paul, 1920-1
- Makas, Anthony1
- Malekpour, Utaco1
- Manzella, Fred1
- Martin, Alan (Violinist)1