| Jastrzębowski, Tadeusz | Tadeusz Jastrzębowski | Actor | 1972 - 1976 | 2 | |
| Jastrzębiec-Rudnicki, Walery | Walery Jastrzębiec-Rudnicki | Actor | 1916 | 1 | |
| Jassogne, Daniel | Daniel Jassogne | Costume Designer, Designer | 2003 | 4 | |
| Jasso, Stephanie, Cleghorn | Stephanie Cleghorn Jasso | Actor | 2018 | 1 | |
| Jaßlauk, Dieter | Dieter Jaßlauk | Actor | 2005 - 2017 | 11 | |
| Jassky, Klaus | Klaus Jassky | Actor | 1997 | 1 | |
| Jasselette, Florence | Florence Jasselette | Costume Designer | 2021 - 2023 | 2 | |
| Jasper, Andrea | Andrea Jasper | Mask Maker | 1998 | 1 | |
| Jason Deuter, Jason Deuter | Jason Deuter Jason Deuter | Lighting Designer | 2013 | 1 | |
| Jasnic, Milutin | Milutin Jasnic | Actor | 1984 | 1 | |
| Jaskol, Evelyn | Evelyn Jaskol | Actor | 1968 | 2 | |
| Jaśkiewicz, Stanisław | Stanisław Jaśkiewicz | Actor | 1958 | 1 | |
| Jaskari, Markus | Markus Jaskari | Actor | 1980 | 1 | |
| Jaskari, Maria | Maria Jaskari | Actor | 1980 | 1 | |
| Jasiukiewicz, Stanislaw | Stanislaw Jasiukiewicz | Actor | 1966 | 1 | |
| Jasinski, Tiffany | Tiffany Jasinski | Actor | 2025 | 1 | |
| Jasiński, Adam | Adam Jasiński | Actor | 1903 - 1907 | 3 | |
| Jasińska, Michalina (Szpakiewicz) | Michalina (Szpakiewicz) Jasińska | Actor | 1912 - 1923 | 4 | |
| Jasińska, Aldona | Aldona Jasińska | Actor | 1920 - 1926 | 2 | |
| Jasińka, Michalina | Michalina Jasińka | Actor | 1915 | 1 | |
| Jasieński, Stanisław | Stanisław Jasieński | Designer | 1907 - 1911 | 3 | |
| Jasielski, Mroczkowska Seweryn | Mroczkowska Seweryn Jasielski | Actor | 1912 | 1 | |
| Jasenka, Antanas | Antanas Jasenka | Composer | 2012 | 1 | |
| Jaschke, Julia | Julia Jaschke | Actor | 1993 - 2011 | 4 | |
| Jaschke, Hella | Hella Jaschke | Actor | 1967 | 1 | |
| Jaschke, Artur | Artur Jaschke | Actor | 1941 | 1 | |
| Jaschik, Álmos | Álmos Jaschik | Designer | 1941 | 1 | |
| Jarzev, Pjotr Mihajlovitsch | Pjotr Mihajlovitsch Jarzev | Director | 1924 | 1 | |
| Jary, Friedl | Friedl Jary | Actor | 1956 | 1 | |
| Jarvis, Martin | Martin Jarvis | Director | 2014 | 1 | |
| Jarvis, Mark | Mark Jarvis | Actor | 2011 | 1 | |
| Järvis, Ene | Ene Järvis | Actor | 1989 | 1 | |
| Jarvis, Christopher | Christopher Jarvis | Actor | 2007 - 2008 | 32 | |
| Jarvis-Taylor, Bryony | Bryony Jarvis-Taylor | Assistant Director | 2024 | 1 | |
| Järvinen, Yrjö | Yrjö Järvinen | Actor | 1967 - 1983 | 3 | |
| Järvinen, Teppo | Teppo Järvinen | Designer | 2001 | 1 | 1 |
| Järvinen, Martti-Mikael | Martti-Mikael Järvinen | Actor | 1980 | 4 | |
| Järvinen, Martti | Martti Järvinen | Actor | 1973 - 2007 | 5 | |
| Järvinen, Jaana | Jaana Järvinen | Actor | 1994 | 1 | |
| Järviluoto, Mikko | Mikko Järviluoto | Actor | 2024 | 1 | |
| Järvi, Neeme | Neeme Järvi | Conductor | 2006 | 1 | |
| Järvet, Jüri | Jüri Järvet | Actor | 1962 | 2 | |
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