| Ultaver, Ralf | Ralf Ultaver | Actor | 1977 | 1 | |
| Ulvås, Lisa | Lisa Ulvås | Actor | 1997 | 1 | |
| Ulvestad, Amund | Amund Ulvestad | Sound Designer | 2018 - 2022 | 48 | |
| Ulvevadet, Benjamin | Benjamin Ulvevadet | Actor | 2006 | 1 | |
| Ulwan, Peter | Peter Ulwan | Dramaturg | 1996 | 1 | |
| Ulysse, Fred | Fred Ulysse | Actor | 2008 - 2009 | 16 | |
| Uma-Yim, Ullarun, Vann | Ullarun Vann Uma-Yim | Mask Maker | 1985 | 1 | |
| Umberger, Lea | Lea Umberger | Designer | 2018 | 1 | |
| Umek, Bojan | Bojan Umek | Actor | 2016 | 1 | |
| Umemura, Ayako | Ayako Umemura | Actor | 2017 | 2 | |
| Umeno, Taisei | Taisei Umeno | Actor | 1986 | 1 | |
| Umezawa, Masayo | Masayo Umezawa (梅沢昌代) | Actor | 2023 | 4 | |
| Umgelter, Fritz | Fritz Umgelter | Director | 1955 | 1 | |
| Umhoefer, Stephen | Stephen Umhoefer | Actor | 2013 | 1 | |
| Umland, Amy Charlotte | Amy Charlotte Umland | Actor | 1987 | 1 | |
| Umlauf, Brigitte | Brigitte Umlauf | Actor | 1971 | 1 | |
| Umminger, Willy | Willy Umminger | Actor, Director | 1919 - 1931 | 5 | |
| Umpelva, Galina, Nikolaevna | Galina Nikolaevna Umpelva | Actor | 1979 | 1 | |
| Umseher, Rodrigo | Rodrigo Umseher | Actor | 2023 | 7 | |
| Unamba, Uzoamaka | Uzoamaka Unamba | Actor | 2012 | 1 | |
| Unda, Emilia | Emilia Unda | Actor | 1908 - 1914 | 10 | |
| Under, Marie | Marie Under | Translator | 1978 - 1997 | 2 | 1 |
| Under, Tunca | Tunca Under | Actor | 2010 | 1 | |
| Underbakke, Ryan | Ryan Underbakke | Actor | 2003 | 1 | |
| Underferth, Jason | Jason Underferth | Director, Lighting Designer, Producer | 2004 - 2012 | 32 | |
| Underland, Niels Peter | Niels Peter Underland | Director | 2012 - 2015 | 3 | 1 |
| Underwood, Jill | Jill Underwood | Actor | 2002 - 2008 | 7 | 2 |
| Underwood, Kristen | Kristen Underwood | Actor, Director | 1999 - 2001 | 4 | |
| Undisz, Sebastian | Sebastian Undisz | Actor, Composer | 2009 - 2011 | 16 | |
| Undlien, Liv Tone | Liv Tone Undlien | Actor | 1998 | 2 | |
| Undnæs, Sverre | Sverre Undnæs | Director | 1975 | 1 | |
| Ung, Jill | Jill Ung | Actor | 1985 | 2 | 1 |
| Ung, Yang Jung | Yang Jung Ung | Director | 2009 - 2012 | 3 | |
| Ungan, Teresa | Teresa Ungan | Designer | 2017 | 1 | |
| Ungár, Júlia | Júlia Ungár | Dramaturg | 1994 - 2016 | 10 | |
| Ungár, Kati | Kati Ungár | Actor | 1965 | 1 | |
| Ungar, Klara | Klara Ungar | Actor | 1879 - 1897 | 3 | |
| Ungaro, Sophie | Sophie Ungaro | Costume Designer | 2013 - 2014 | 5 | |
| Unge, Bibbi | Bibbi Unge | Actor | 1978 | 1 | |
| Ungen Schøll, Klaus | Klaus Ungen Schøll | Musician | 2008 | 1 | |
| Unger, Alduin | Alduin Unger | Director | 1900 | 1 | |
| Unger, Craig | Craig Unger | Actor | 1992 - 1993 | 2 | |
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