| O'Connor, Jim | Jim O'Connor | Actor | 2006 | 1 | 1 |
| O'Neill, Luke | Luke O'Neill | Actor | 2006 | 1 | |
| O'Brien, Jackie | Jackie O'Brien | Actor | 2006 | 10 | |
| O'Rorke, Elle | Elle O'Rorke | Actor | 2006 | 1 | |
| Olsen, Mikkel, Are | Mikkel Are Olsen | Dancer | 2006 | 1 | |
| Omrani, Mohammad | Mohammad Omrani | Actor | 2006 | 1 | |
| Omoto, Luka | Luka Omoto | Actor | 2006 | 1 | |
| Oberhäußer, Frank | Frank Oberhäußer | Assistant Director | 2006 | 1 | |
| O'Donnell, Vayu | Vayu O'Donnell | Actor | 2005 - 2016 | 2 | |
| Okura, Shonosuke | Shonosuke Okura | Actor | 2005 - 2013 | 14 | |
| Opstad, Peder | Peder Opstad | Actor, Adaptation, Director, Producer | 2005 - 2010 | 183 | |
| Ohlsson, Monica | Monica Ohlsson | Dramaturg, Translator | 2005 - 2009 | 8 | 1 |
| Opstad, Cathrine Gåre | Cathrine Gåre Opstad | Costume Designer | 2005 - 2008 | 90 | |
| Olsen, Lars Reynert | Lars Reynert Olsen | Actor | 2005 - 2008 | 90 | |
| Ostrowski, Andrew David | Andrew David Ostrowski | Lighting Designer | 2005 - 2007 | 2 | |
| Ostałowska, Dominika | Dominika Ostałowska | Actor | 2005 - 2006 | 4 | |
| Odasso, Cristina | Cristina Odasso | Actor | 2005 - 2006 | 19 | |
| Obrtelová, Nora | Nora Obrtelová | Dramaturg | 2005 | 1 | |
| Obuchowicz, Bartek Kaminski | Bartek Kaminski Obuchowicz | Actor | 2005 | 1 | |
| Oliver, Heather | Heather Oliver | Producer | 2005 | 2 | |
| Orosz, Helga | Helga Orosz | Actor | 2005 | 2 | |
| Oltványi, Klára | Klára Oltványi | Costume Designer | 2005 | 1 | |
| Obradović, Vera | Vera Obradović | Choreographer | 2005 | 1 | |
| O'Brien, Shelley | Shelley O'Brien | Actor | 2005 | 7 | |
| Ojanen, Laura | Laura Ojanen | Actor | 2005 | 1 | 1 |
| Odiyankova, Lyudmila | Lyudmila Odiyankova | Actor | 2005 | 1 | |
| Onat, Cigdem | Cigdem Onat | Director | 2005 | 1 | |
| Ostapov, Vladimir | Vladimir Ostapov | Actor | 2005 | 1 | |
| O´Connell, Dyan | Dyan O´Connell | Lighting Designer | 2005 | 1 | |
| Ortiz, Alexa | Alexa Ortiz | Actor | 2005 | 1 | |
| Overcash, Dustin | Dustin Overcash | Actor | 2005 | 1 | |
| Olsen Rosing, Anna Nuka | Anna Nuka Olsen Rosing | Costume Designer | 2005 | 1 | |
| O'Brien, Ita | Ita O'Brien | Actor | 2005 | 1 | |
| Osthoff, Sabine | Sabine Osthoff | Actor | 2005 | 1 | |
| O'Brien, Jim | Jim O'Brien | Actor | 2004 - 2021 | 2 | 1 |
| Ottersen, Kyrre, Eikås | Kyrre Eikås Ottersen | Actor | 2004 - 2016 | 10 | |
| Ostermann, Brigitte | Brigitte Ostermann | Dramaturg | 2004 - 2008 | 4 | |
| Opsahl, Kristina | Kristina Opsahl | Actor | 2004 - 2006 | 6 | |
| Odendahl, Florian | Florian Odendahl | Actor | 2004 - 2005 | 15 | |
| Orcier, Cendrine | Cendrine Orcier | Actor | 2004 - 2005 | 63 | |
| Orcier, Fabien | Fabien Orcier | Actor | 2004 - 2005 | 72 | |
| Orcier, Sylvie | Sylvie Orcier | Designer | 2004 - 2005 | 9 | |
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