Registry
- Zdzisław Jachimecki (1882 - 1953)
- Édouard Jacobs (1851 - 1925)
- Salomon Jadassohn (1831 - 1902)
- Julius Albert Jahn (1863 - 1929)
- Byron Janis (1928 - None)
- Giuseppe Jannacconi (1740 - 1816)
- Jean-Baptiste Janson (1742 - 1803)
- Andrzej Jasiński (1936 - None)
- Ernst Jedliczka (1855 - 1904)
- Joseph Joachim (1831 - 1907)
- Niccolò Jommelli (1714 - 1774)
- Scott Joplin (c.1868 - 1917)
- Rafael Joseffy (1852 - 1915)
- Julius Joseph Maier (1821 - 1889)
- Johann Jäger (1748 - c.1826)