K
- Božidar Kantušer (1921–1999)
- Leonard Kastle (1929–2011)
- Ulysses Kay (1917–1995)
- Brian Kelly (born 1960)
- Edgar Stillman Kelley (1857–1944)
- Martin Kennedy (born 1978)
- Jerome Kern (1885–1945)
- Aaron Jay Kernis (born 1960)
- Earl Kim (1920–1998)
- Karl King (1891–1971)
- Leon Kirchner (1919–2009)
- Joseph Klein (born 1962)
- Edward Knight (born 1961)
- Charles Knox (born 1929)
- Erich Wolfgang Korngold (1897–1957)
- Eddie Kendricks (1939–1992)
- Ellis B. Kohs (1916–2000)
- Ben Kopec (born 1981)
- Ernst Krenek (1900–1991)
- Gail Kubik (1914–1984)
- Jean Paul Kürsteiner (1864–1943)
- Robert Kyr (born 1952)
Read more about this topic: List Of American Composers