J
- Steve Jablonsky (born 1970)
- Francis Jackson (born 1917)
- Tony Jackson (1876–1921)
- Gordon Jacob (1895–1984)
- Frederick Jacobi (1891–1952)
- Victor Jacobi (Jakabfi Viktor) (1883–1921)
- Jens Bjerre Jacobsen (1903–1986)
- Jacquet de Mantua (Jachet de Mantoue) (1483–1559)
- Salomon Jadassohn (1831–1902)
- Hyacinthe Jadin (1776–1800)
- Louis-Emmanuel Jadin (1768–1853)
- Alfred Jaëll (1832–1882)
- Stephen Jaffe (born 1954)
- Edward Jakobowski (1858–1927)
- Prenkë Jakova (1917–1969)
- Philip James (1890–1975)
- Jan z Lublina (fl. 1537–1548)
- Leoš Janáček (1852–1928)
- Clément Janequin (c. 1485–1558)
- Johann Gottlieb Janitsch (1708–1763)
- Leopold Jansa (1795–1875)
- Guus Janssen (born 1951)
- Antonius Janue (fl. c. 1460)
- Jean Japart (fl. c. 1474–1481)
- Armas Järnefelt (1869–1958)
- Georg Jarno (1868–1920)
- Ivan Mane Jarnović (Giornovichi) (1747–1804)
- Jean Michel Jarre (born 1948)
- Maurice Jarre (1924–2009)
- Michael Jarrell (born 1958)
- Adam Jarzębski (c. 1590–c. 1648)
- Maurice Jaubert (1900–1940)
- Harris Jayaraj (born 1975)
- Johannes Jeep (1581/1582–1644)
- George Jeffreys (c. 1610–1685)
- Sándor Jemnitz (1890–1963)
- John Jenkins (1592–1678)
- Karl Jenkins (born 1944)
- Davorin Jenko (1835–1914)
- Thomas Jennefelt (born 1954)
- Gustav Jenner (1865–1920)
- Leon Jessel (1871–1942)
- Maistre Jhan (c. 1485–1538)
- Joseph Joachim (1831–1907)
- João IV (John IV of Portugal) (1603–1656)
- Antônio Carlos Jobim (1927–1994)
- Gunnar Johansen (1906–1991)
- Alan John (born 1958)
- David C. Johnson (born 1940)
- David Earle Johnson (died 1998)
- David N. Johnson (1922–1987)
- John Johnson (fl. 1579–1594)
- Laurie Johnson (born 1927)
- Robert Johnson (c. 1583–c. 1633)
- Tom Johnson (born 1939)
- Ben Johnston (born 1926)
- Betsy Jolas (born 1926)
- André Jolivet (1905–1974)
- Niccolò Jommelli (1714–1774)
- Jens Joneleit (born 1968)
- Daniel Jones (1912–1993)
- Edwin Arthur Jones (1853–1911)
- Richard Jones (late 17th century–1744)
- Ron Jones (born 1954)
- Samuel Jones (born 1935)
- Joseph Jongen (1873–1953)
- Scott Joplin (c. 1868–1917)
- Mihail Jora (1891–1971)
- Victoria Jordanova (born 1952)
- Jens Josef (born 1967)
- Bradley Joseph (born 1965)
- Wilfred Josephs (1927–1997)
- Josquin des Prez (c. 1450/1455–1521)
- John Joubert (born 1927)
- Gilles Joye (c. 1424/1425–1483)
- Hans Judenkünig (Judenkönig) (c. 1445/1450–1526)
- Gilles Jullien (c. 1651/1653–1703)
- Louis Antoine Jullien (1812–1860)
- Paul Juon (1872–1940)
Read more about this topic: List Of Composers By Name