| Undisz, Sebastian | Sebastian Undisz | Actor, Composer | 2009 - 2011 | 16 | |
| Ulekleiv, Bjørn | Bjørn Ulekleiv | Actor | 1994 - 2013 | 18 | |
| Ulfsby, Erik | Erik Ulfsby | Actor, Adaptation, Director | 1992 - 2018 | 24 | |
| Ueda, Kuniyoshi | Kuniyoshi Ueda | Adaptation, Assistant Director, Director | 2005 - 2013 | 28 | |
| Unser, Ines | Ines Unser | Costume Designer, Designer | 2006 | 32 | |
| Underferth, Jason | Jason Underferth | Director, Lighting Designer, Producer | 2004 - 2012 | 32 | |
| Uddén, Gunnar | Gunnar Uddén | Actor | 1965 - 2002 | 33 | |
| Ullmann, Liv | Liv Ullmann | Actor | 1960 - 2006 | 43 | |
| Urbanski, Oliver | Oliver Urbanski | Actor, Composer | 2004 - 2013 | 44 | |
| Ulvestad, Amund | Amund Ulvestad | Sound Designer | 2018 - 2022 | 48 | |
| Utsi, Nils | Nils Utsi | Actor, Adaptation, Translator | 1968 - 2011 | 55 | |
| Unwin, Stephen | Stephen Unwin | Director, Translator | 1994 - 2013 | 59 | |
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