| Jacobsen, Mette | Mette Jacobsen | Costume Designer, Designer | 1997 - 2013 | 76 | 1 |
| Julin, Yngvar | Yngvar Julin | Costume Designer, Designer | 2006 - 2008 | 30 | 1 |
| Jackson, Barry V. | Barry V. Jackson | Costume Designer, Designer | 1915 | 4 | |
| Jitianu, Dan | Dan Jitianu | Costume Designer, Designer | 1968 - 1978 | 5 | 1 |
| Janson, Astrid | Astrid Janson | Costume Designer, Designer | 1983 | 2 | |
| Jaeneke, Gabriele | Gabriele Jaeneke | Costume Designer, Designer | 1986 | 2 | |
| Jakobsen, Ulv | Ulv Jakobsen | Costume Designer, Designer | 1994 | 2 | |
| Jelínek, Josef | Josef Jelínek | Costume Designer, Designer | 1979 - 2007 | 5 | |
| Jonsson, Per, A. | Per A. Jonsson | Costume Designer, Designer | 1978 - 1996 | 27 | |
| Jassogne, Daniel | Daniel Jassogne | Costume Designer, Designer | 2003 | 4 | |
| Jacobssen, Kerstin | Kerstin Jacobssen | Costume Designer, Designer | 2006 - 2024 | 3 | |
| Jungheinrich, Anja | Anja Jungheinrich | Costume Designer, Designer | 2006 | 4 | |
| Jacob, Geertje | Geertje Jacob | Costume Designer, Designer | 2006 | 4 | |
| Jacovskis, Marijus | Marijus Jacovskis | Costume Designer, Designer | 2009 - 2010 | 6 | |
| Jivanov, Emilia | Emilia Jivanov | Costume Designer, Designer | 1970 - 1978 | 4 | |
| Jiménez , Carolina | Carolina Jiménez | Costume Designer, Designer | 2022 | 2 | |
| Job, Enrico | Enrico Job | Costume Designer, Designer | 1977 - 1978 | 16 | |
| 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 | |
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