J (48)
| Name | Born - Died | Place of birth | Requiems |
 | Gabriel Jackson | 1962 - | Great Britain, England | 1 |
 | Nicholas Jackson | 1934 - | Great Britain, England | 1 |
| Václav Gunther Jacob | 1685 - 1734 | Czech Republic | 2 |
 | Joshua R. Jacobson | 1948 - | United States of America | 1 |
 | Derek Jacoby | 1978 - | United States of America, CA | 1 |
 | Louis Emmanuel Jadin | 1768 - 1853 | France | 1 |
| Manuel Jagarte | 1796 - 1819 | Spain | 1 |
 | André de Jager | 1964 - 2023 | The Netherlands | 1 |
| Adalbert Jakaubeck | 18/19th - century | Bohemia | 1 |
| Joseph James | pseudonym - see: | F.J. Brown or S.J. Seeger | |
| Václav Boleslav Janda | 1852 - 1935 | Czech Republic | 1 |
 | Brian C. Janes | c.1975 - | United States of America, IL | 1 |
| Giuseppe Jannacconi | 1740 - 1816 | Italy | 4 |
 | Hans Jansen | 1950 - | The Netherlands | 1 |
 | Robert Janssens | 1939 - | Belgium | 1 |
 | Marek Jasinski | 1949 - | Poland | 1 |
| Johann Evangelist Jaumann | 1765 - 1848 | Germany | 1 |
 | John Jeffreys | 1927 - 2010 | Great Britain, England | 1 |
 | Karl Jenkins | 1944 - | Great Britain, Wales | 1 |
 | Thomas Jennefelt | 1954 - | Sweden | 1 |
 | Albert Jenny | 1912 - 1992 | Switzerland | 1 |
 | Bohuslav Jeremias | 1859 - 1918 | Czech Republic | 1 |
 | Dale Roger Jergenson | 1935 - 2021 | United States of America, MN | 1 |
 | Ignacio Jerusalem y Stella | 1707 - 1769 | Italy | 1 |
 | Willem Jeths | 1959 - | The Netherlands | 1 |
| David Jillet | 1920 - 2006 | New Zealand | 2 |
 | Karel Boleslav Jirák | 1891 - 1972 | Czech Republic | 1 |
 | Ivan Jirko | 1926 - 1978 | Czech Republic | 1 |
 | Bengt Johansson | 1914 - 1989 | Finland | 1 |
 | Peter Johns | 20th - century | United States of America | 1 |
 | Sasha Johnson Manning | 1963 - | Great Britain, England | 1 |
 | Niccolò Jommelli | 1714 - 1774 | Italy | 3 |
 | Stuart Jones | 1964 - | United States of America, PA | 1 |
 | Marinus de Jong | 1891 - 1984 | The Netherlands | Belgium | 1 |
 | Joseph Jongen | 1873 - 1953 | Belgium | 2 |
| Oswald Joos | 1837 - 1919 | Germany | 2 |
 | Victoria Jordanova | 1952 - | Serbia | United States of America | 1 |
 | Helge Jorns | 1941 - | Germany | 1 |
 | Helmuth Jorns | 1911 - 1941 | Germany | 1 |
| August Joseph | 18th - century | Austria | 2 |
 | Wilfred Josephs | 1927 - 1997 | Great Britain, England | 1 |
 | Jacob Axel Josephson | 1818 - 1880 | Sweden | 1 |
 | John Pierre Herman Joubert | 1927 - 2019 | South Africa | Great Britain, England | 1 |
 | Laurent Daniel Jouvet | 1957 - | Djibouti | France | 2 |
| Benito Julià | 1728 - 1787 | Spain | 3 |
 | Bernard Jumentier | 1749 - 1829 | France | 1 |
 | Wolfgang Junga | 1959 - | Germany | 1 |
| Engarandus Juvenis | fl. 1480 - 1520 | France | 1 |
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