- Kraft, Marie Simmelink, 1900-19671
- Krause, Susan (Soprano)1
- Kreiselman, Jack5
- Kresky, Jeffrey, 1948-1
- Kriesberg, Matthias1
- Kroeger, Karl1
- Krosnick, Joel1
- Krupp, David1
- Kuderna, Jerome1
- Kunz, Gerald1
- Kupferman, Meyer, 1926-20031
- Kupferman, Theodore1
- Kurka, Robert, 1921-19571
- Kushner, Eugene, 1923-20031
- Kuskin, Charles1
- La Barbara, Joan, 1947-1
- La Montaine, John1
- LaPorta, John2
- Laderman, Ezra2
- Lamoree, Valarie6
- Lancaster, Lisa1
- Lancman, Deborah1
- Laneri, Roberto, 1945-1
- Lanza, Alcides1
- Lark Woodwind Quintet1
- Lash, Warren1
- Laske, Otto E. (Otto Ernst), 1936-1
- Lateiner, Isidor, 1930-20052
- Laufer, Edward, 1938-20141
- Lavanne, Antonia4
- Lawergren, Bo1
- Lawrence, D. H. (David Herbert), 1885-19302
- Lawton, David1
- Layton, Billy Jim, 1924-20041
- Lazarof, Henri1
- LePage, Pierrette, 1939-1
- Lee, Noël, 1924-20131
- Lees, Benjamin, 1924-20101
- Leichtling, Avrohom1
- Leifur Thórarinsson, 1934-19981
- Lein, David2
- Lenel, Ludwig1
- Lentz, Daniel, 1942-1
- Leonards, Francis2
- 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