| Ullrichová, Daria | Daria Ullrichová | Adaptation, Dramaturg | 1988 - 1991 | 7 | |
| Ulmu, Bogdan | Bogdan Ulmu | Adaptation, Director | 2003 | 2 | |
| Udrescu, Cezarina | Cezarina Udrescu | Adaptation, Director | 2009 | 2 | |
| Ulrich, Jochen | Jochen Ulrich | Adaptation, Choreographer | 1993 | 2 | |
| Ueda, Kuniyoshi | Kuniyoshi Ueda | Adaptation, Assistant Director, Director | 2005 - 2013 | 28 | |
| Urpelainen, Liisa | Liisa Urpelainen | Adaptation | 1992 - 1994 | 2 | |
| Umminger, Willy | Willy Umminger | Actor, Director | 1919 - 1931 | 5 | |
| Urmy, Ralph | Ralph Urmy | Actor, Director | 1929 - 1936 | 2 | |
| Urbánek, Karel | Karel Urbánek | Actor, Director | 1912 - 1933 | 7 | |
| Ulrici, Adalbert | Adalbert Ulrici | Actor, Director | 1909 - 1919 | 6 | |
| Ukena, Sebastian | Sebastian Ukena | Actor, Director | 2002 | 2 | |
| Underwood, Kristen | Kristen Underwood | Actor, Director | 1999 - 2001 | 4 | |
| Urushido, Yoshimi | Yoshimi Urushido | Actor, Director | 1992 | 2 | |
| Uddin, Sardar Aftab | Sardar Aftab Uddin | Actor, Designer | 2000 - 2004 | 7 | |
| Ullur, Harsha | Harsha Ullur | Actor, Designer | 2015 | 2 | |
| Unn | Unn - | Actor, Dancer | 2003 | 2 | |
| Ulekleiv, Silje | Silje Ulekleiv | Actor, Costume Designer, Designer | 1994 - 2010 | 11 | |
| Uukkivi, Ivo | Ivo Uukkivi | Actor, Costume Designer | 1995 - 2014 | 6 | 1 |
| Urbanski, Oliver | Oliver Urbanski | Actor, Composer | 2004 - 2013 | 44 | |
| Ursachi, Şerban | Şerban Ursachi | Actor, Composer | 2009 | 2 | |
| Undisz, Sebastian | Sebastian Undisz | Actor, Composer | 2009 - 2011 | 16 | |
| Utsi, Nils | Nils Utsi | Actor, Adaptation, Translator | 1968 - 2011 | 55 | |
| Ulfsby, Erik | Erik Ulfsby | Actor, Adaptation, Director | 1992 - 2018 | 24 | |
| Ulrich, Luise | Luise Ulrich | Actor | 1944 | 1 | |
| Uchida, Reiko | Reiko Uchida | Actor | 1955 | 1 | |
| Uda, Shozo | Shozo Uda | Actor | 1913 - 1914 | 2 | |
| Uddén, Gunnar | Gunnar Uddén | Actor | 1965 - 2002 | 33 | |
| Ueckermann, Anne-Britt | Anne-Britt Ueckermann | Actor | 1983 | 1 | |
| Uhlen, Gisela | Gisela Uhlen | Actor | 1946 - 1993 | 4 | |
| Ukmar, Berta | Berta Ukmar | Actor | 1979 | 1 | |
| Ulbrich, Maria | Maria Ulbrich | Actor | 1986 | 1 | |
| Ullmann, Liv | Liv Ullmann | Actor | 1960 - 2006 | 43 | |
| Ultaver, Ralf | Ralf Ultaver | Actor | 1977 | 1 | |
| Unda, Emilia | Emilia Unda | Actor | 1908 - 1914 | 10 | |
| Underwood, Jill | Jill Underwood | Actor | 2002 - 2008 | 7 | 1 |
| Ungár, Kati | Kati Ungár | Actor | 1965 | 1 | |
| Unruh, Dieter | Dieter Unruh | Actor | 1957 - 1988 | 2 | |
| Unterweger, Birgit | Birgit Unterweger | Actor | 2002 - 2015 | 3 | |
| Upendra, Sanjeeva | Sanjeeva Upendra | Actor | 2006 | 7 | |
| Uray, Peter | Peter Uray | Actor | 1979 | 1 | |
| Urban, Julia | Julia Urban | Actor | 2002 - 2008 | 4 | 3 |
| Urbič, Breda | Breda Urbič | Actor | 1951 - 1979 | 2 | |
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