| Özdemir, Sengül | Sengül Özdemir (Sengül Özdemir) | Actor | 2010 | 8 | 2 |
| Ördög, Tamás | Tamás Ördög | Actor, Adaptation, Director | 2009 - 2016 | 10 | 2 |
| Öbergson, Bror | Bror Öbergson (Bror Öbergson) | Actor | 1936 | 1 | |
| Öbergsson, Bror | Bror Öbergsson (Bror Öbergsson) | Actor | 1917 | 1 | |
| Öbrink, Andreas | Andreas Öbrink (Andreas Öbrink) | Actor | 1999 | 1 | |
| Öhlund, Gunnar | Gunnar Öhlund (Gunnar Öhlund) | Actor | 1971 - 1974 | 3 | |
| Öqvist, Jan | Jan Öqvist (Jan Öqvist) | Designer, Lighting Designer | 2000 - 2008 | 4 | |
| Örtengren, Albion | Albion Örtengren | Actor | 1883 - 1927 | 19 | |
| Östergren, Klas | Klas Östergren (Klas Östergren) | Translator | 1988 - 2022 | 168 | |
| Östergren, Pernilla | Pernilla Östergren | Actor | 1989 - 1998 | 5 | |
| Öztürk, Özdemir | Özdemir Öztürk (Özdemir Öztürk) | Actor | 1990 | 1 | |
| Österdal, Mikaela | Mikaela Österdal (Mikaela Österdal) | Actor | 1972 - 1973 | 5 | |
| Örtengren, Frans | Frans Örtengren (Frans Örtengren) | Actor | 1879 - 1898 | 6 | |
| Öberg, Ernst | Ernst Öberg (Ernst Öberg) | Actor | 1895 - 1896 | 30 | |
| Östergren, Ida | Ida Östergren (Ida Östergren) | Actor | 1898 - 1907 | 6 | |
| Öberg, Frans-Oscar | Frans-Oscar Öberg (Frans-Oscar Öberg) | Actor | 1919 - 1954 | 3 | |
| Örn, Hasse | Hasse Örn | Musician | 1995 - 1996 | 4 | |
| Öbergsson, Agnes | Agnes Öbergsson | Actor | 1912 - 1913 | 2 | |
| Östlund, Alf | Alf Östlund | Actor | 1972 - 1973 | 4 | |
| Ödemo, Gun | Gun Ödemo | Actor | 1979 | 1 | |
| Öhman, Gunborg | Gunborg Öhman | Costume Designer | 1975 | 1 | |
| Öhrberg, Thore | Thore Öhrberg | Actor | 1914 | 7 | |
| Öhrberg, Lisa | Lisa Öhrberg | Actor | 1914 | 15 | |
| Öberg, Mr. | Mr. Öberg | Actor | 1919 | 1 | |
| Öhlund, Nils | Nils Öhlund | Adaptation, Director, Translator | 2009 - 2010 | 15 | |
| Örnmarker, Karin | Karin Örnmarker | Actor | 1991 | 2 | |
| Öqvist, Roger | Roger Öqvist | Actor | 1997 | 3 | |
| Öbom, Anette | Anette Öbom | Actor | 1997 | 1 | |
| Östergren, Niclas | Niclas Östergren | Actor | 1997 | 4 | |
| Örkényi, Éva | Éva Örkényi | Actor | 1996 | 1 | |
| Östergren, Lise Lotte | Lise Lotte Östergren | Actor | 1997 | 1 | |
| Östergren, Benno | Benno Östergren | Actor | 1997 | 3 | |
| Ötvös, András | András Ötvös | Actor | 2013 | 1 | |
| Ölveczky, Cecilia | Cecilia Ölveczky | Dramaturg | 1989 | 1 | |
| Önder, Cem | Cem Önder | Actor | 2001 | 1 | |
| Öfverberg, Ann-Sofie | Ann-Sofie Öfverberg | Actor | 2003 | 2 | |
| Örndahl, Cita | Cita Örndahl | Actor | 2001 | 4 | |
| Öhman, Steina | Steina Öhman | Actor, Adaptation, Choreographer | 2008 | 6 | |
| Örn, Heikki | Heikki Örn | Lighting Designer | 2008 | 1 | |
| Özman, Esen | Esen Özman | Actor | 2008 | 1 | |
| Özcan, Reha | Reha Özcan | Actor | 2008 | 1 | |
| Östh, Mattias | Mattias Östh | Actor | 2008 | 1 | |
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