| Öberg, Ernst | Ernst Öberg | Actor | 1895 - 1896 | 30 | |
| Öberg, Frans-Oscar | Frans-Oscar Öberg | Actor | 1919 - 1954 | 3 | |
| Öberg, Mr. | Mr. Öberg | Actor | 1919 | 1 | |
| Öbergson, Bror | Bror Öbergson | Actor | 1936 | 1 | |
| Öbergsson, Agnes | Agnes Öbergsson | Actor | 1912 - 1913 | 2 | |
| Öbergsson, Bror | Bror Öbergsson | Actor | 1917 | 1 | |
| Öbom, Anette | Anette Öbom | Actor | 1997 | 1 | |
| Öbrink, Andreas | Andreas Öbrink | Actor | 1999 | 1 | |
| Öçalmaz, Özlem | Özlem Öçalmaz | Actor | 2024 | 1 | |
| Ödemo, Gun | Gun Ödemo | Actor | 1979 | 1 | |
| Ödmann, Joel | Joel Ödmann | Actor | 2018 - 2022 | 3 | |
| Öfverberg, Ann-Sofie | Ann-Sofie Öfverberg | Actor | 2003 | 2 | |
| Ögüt, Yılmaz | Yılmaz Ögüt (Yilmaz Ogut) | Translator | 2012 | 1 | |
| Öhlund, Gunnar | Gunnar Öhlund | Actor | 1971 - 1974 | 3 | |
| Öhlund, Nils | Nils Öhlund | Adaptation, Director, Translator | 2009 - 2010 | 15 | |
| Öhman, Gunborg | Gunborg Öhman | Costume Designer | 1975 | 1 | |
| Öhman, Harry | Harry Öhman | Designer | 1959 | 1 | |
| Öhman, Steina | Steina Öhman | Actor, Adaptation, Choreographer | 2008 | 6 | 1 |
| Öhrberg, Hr. | Hr. Öhrberg | Actor | 1880 | 1 | |
| Öhrberg, Lisa | Lisa Öhrberg | Actor | 1914 | 15 | |
| Öhrberg, Thore | Thore Öhrberg | Actor | 1914 | 7 | |
| Öhrström, Jenny | Jenny Öhrström | Actor | 1878 - 1879 | 3 | |
| Ök, Birol | Birol Ök (Birol Ok) | Actor | 1971 | 1 | |
| Öktem, Güven | Güven Öktem (Guven Oktem) | Designer | 1981 | 1 | |
| Ölveczky, Cecilia | Cecilia Ölveczky | Dramaturg | 1989 | 1 | 1 |
| Önal, Yıldırım | Yıldırım Önal | Actor | 1956 | 1 | |
| Önder, Cem | Cem Önder | Actor | 2001 | 1 | |
| Öqvist, Jan | Jan Öqvist | Designer, Lighting Designer | 2000 - 2008 | 4 | |
| Öqvist, Roger | Roger Öqvist | Actor | 1997 | 3 | |
| Ördög, Tamás | Tamás Ördög | Actor, Adaptation, Director | 2009 - 2016 | 10 | 2 |
| Örkényi, Éva | Éva Örkényi | Actor | 1996 | 1 | |
| Örn, Hasse | Hasse Örn | Musician | 1995 - 1996 | 4 | |
| Örn, Heikki | Heikki Örn | Lighting Designer | 2008 | 1 | |
| Örndahl, Cita | Cita Örndahl | Actor | 2001 | 4 | |
| Örnmarker, Karin | Karin Örnmarker | Actor | 1991 | 2 | |
| Örs, Emre | Emre Örs (Emre Ors) | Dramaturg | 2017 | 1 | |
| Örtengren, Albion | Albion Örtengren | Actor | 1883 - 1927 | 19 | 1 |
| Örtengren, Frans | Frans Örtengren | Actor | 1879 - 1898 | 6 | |
| Östby, John | John Östby | Actor | 1937 | 1 | |
| Österdal, Mikaela | Mikaela Österdal | Actor | 1972 - 1973 | 5 | |
| Östergren, Agnes | Agnes Östergren | Costume Designer | 2023 | 1 | |
| Östergren, Benno | Benno Östergren | Actor | 1997 | 3 | |
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