- Kipling, Rudyard, 1865-19362
- Kirchner, Leon1
- Kirkbride, Jerry2
- Kirkpatrick, John, 1905-19913
- Klein, Charles, 1867-19152
- Klein, Fred E4
- Klein, Jason (Conductor)1
- Kleinsasser, William, 1961-1
- Kneeream, Ralph1
- Knepper, Jimmy, 1927-20033
- Knickerbocker Chamber Players2
- Knight, Felix1
- Knight, Morris, 1933-20131
- Koch, John, 1928-20141
- Koellreutter, Hans Joachim, 1915-20051
- Kohn, Karl, 1926-1
- Kohon String Quartet5
- Kohon, Harold2
- Kohs, Ellis B., 1916-20001
- Komaiko, William4
- Konimsky, Anna1
- Kopulos, Maria1
- Korn, Barbara1
- Korn, Peter Jona1
- Kornacker, Thomas1
- Korte, Karl1
- Koto nski, W odzimierz1
- Kotoński, Włodzimierz1
- Kouguell, Alexander6
- Koussevitzky, Serge, 1874-19511
- Koutzen, George3
- Kozusko, Colette1
- Kraber, Karl6
- Kraft, Jean1
- Kraft, Leo3
- Kraft, Marie Simmelink, 1900-19671
- Kraft, Robert, 1869-19161
- Krause, Susan (Soprano)1
- Kreiger, Arthur, 1945-30
- Kreiselman, Jack5
- Kresky, Jeffrey, 1948-1
- Kreutz, Arthur, 1906-19911
- Kriesberg, Matthias1
- Kroeger, Karl1
- Krosnick, Joel3
- Krupp, David1
- Kuderna, Jerome1
- Kugler, Richard1
- Kunz, Gerald1
- Kupferman, Meyer, 1926-20031
- Kupferman, Theodore1
- Kurka, Robert, 1921-19573
- Kushner, Eugene, 1923-20031
- Kuskin, Charles1
- Kuznetsov, Anatoli, 1929-19791
- Ḳol Yiśraʼel. Orchestra1
- La Barbara, Joan, 1947-1
- La Montaine, John1
- LaPorta, John5
- Labroca, Mario, 1896-19731