| Johnson, Milton | Milton Johnson | Conductor | 1940 | 1 | |
| Joneš, Boris | Boris Joneš | Conductor | 1985 | 1 | |
| Järnefelt, Armas | Armas Järnefelt | Conductor | 1914 | 1 | |
| Jacobson, Ilja | Ilja Jacobson | Conductor | 1928 | 1 | |
| Järvi, Neeme | Neeme Järvi | Conductor | 2006 | 1 | |
| Jánoskúti, Márta | Márta Jánoskúti | Costume Designer | 1995 - 2006 | 4 | 1 |
| Jarc, Mija | Mija Jarc | Costume Designer | 1979 | 1 | |
| Joern, Christine | Christine Joern | Costume Designer | 2003 | 1 | |
| Johnson, Anne | Anne Johnson | Costume Designer | 1957 | 1 | |
| Jossen, Marie-Therese | Marie-Therese Jossen | Costume Designer | 1990 | 1 | |
| Jágr, Miloslav | Miloslav Jágr | Costume Designer | 1965 | 1 | |
| Jaen, Rafael | Rafael Jaen | Costume Designer | 2011 | 1 | |
| Jovanović, Božana | Božana Jovanović | Costume Designer | 1975 - 1982 | 4 | |
| Jokelin, Aili | Aili Jokelin | Costume Designer | 1979 | 1 | |
| Janáková, Radka | Radka Janáková | Costume Designer | 1993 | 1 | |
| Jeżowski, Krzysztof | Krzysztof Jeżowski | Costume Designer | 1983 | 1 | |
| Jokelová, Silvia | Silvia Jokelová | Costume Designer | 2009 - 2011 | 3 | |
| Jensen, Shan | Shan Jensen | Costume Designer | 2010 | 1 | |
| Jodal, Ágnes | Ágnes Jodal | Costume Designer | 1990 | 1 | |
| Jara, Jorge | Jorge Jara | Costume Designer | 1990 | 1 | |
| Jörg, Marianne | Marianne Jörg | Costume Designer | 1992 | 1 | |
| Johnsen, Ole | Ole Johnsen | Costume Designer | 1988 | 1 | |
| Jurglanis, Marla | Marla Jurglanis | Costume Designer | 1998 - 2014 | 2 | |
| Jensen, Karna | Karna Jensen | Costume Designer | 2002 - 2004 | 2 | |
| Jørgensen, Ellen | Ellen Jørgensen | Costume Designer | 2002 | 1 | |
| Jeremias, Bianca Imelda | Bianca Imelda Jeremias | Costume Designer | 2012 - 2022 | 10 | 1 |
| Jenkins, Gwendolyn | Gwendolyn Jenkins | Costume Designer | 2004 | 1 | 1 |
| Ježková, Zuzana | Zuzana Ježková | Costume Designer | 2000 | 1 | |
| Junko, Maiju | Maiju Junko | Costume Designer | 2005 | 1 | 1 |
| Jönsson Lunde, Evalena | Evalena Jönsson Lunde | Costume Designer | 2005 | 1 | |
| Joshi, Nalini | Nalini Joshi | Costume Designer | 2006 | 1 | |
| Joutsen, Tiina | Tiina Joutsen | Costume Designer | 2008 | 1 | |
| Jäger, Ingrid | Ingrid Jäger | Costume Designer | 2008 - 2009 | 2 | |
| Jack, Summer, Lee | Summer Lee Jack | Costume Designer | 2010 | 1 | |
| Josalkar, Padmashree | Padmashree Josalkar | Costume Designer | 2010 | 1 | |
| Jambrek, Jerneja | Jerneja Jambrek | Costume Designer | 2010 - 2012 | 3 | |
| Jud, Karin | Karin Jud | Costume Designer | 2011 | 1 | |
| Jurglanis, Marla J. | Marla J. Jurglanis | Costume Designer | 2011 | 1 | |
| Jeftic, Ognjen | Ognjen Jeftic | Costume Designer | 2014 | 1 | |
| Jackson, Yvonne | Yvonne Jackson | Costume Designer | 1964 | 1 | |
| Jackson, Rhea | Rhea Jackson | Costume Designer | 1961 | 1 | |
| Jappe-Alberts, - | - Jappe-Alberts | Costume Designer | 1961 | 1 | |
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