| Ortiz, Carolina | Carolina Ortiz | Lighting Designer | 2022 | 1 | |
| Ošavkova, Sonja | Sonja Ošavkova (Соња Ошавкова) | Actor | 2013 | 1 | |
| Osmani, Blerim | Blerim Osmani (Блерим Османи) | Musician | 2022 | 1 | |
| Olivar, Mr | Mr Olivar | Actor | 1900 | 2 | |
| Ouisem, Abdellaoui | Abdellaoui Ouisem | Actor | 2022 | 1 | |
| Oteyza, Ramón | Ramón Oteyza | Actor | 1975 | 1 | |
| Olier, Luz | Luz Olier | Actor | 2016 | 8 | |
| Olteanu , Stefan | Stefan Olteanu | Actor | 2022 | 1 | |
| Oliva, Mr. | Mr. Oliva | Actor | 1893 | 1 | |
| Ochoa, José | José Ochoa | Adaptation, Director | 1974 - 1975 | 10 | |
| Ocano, Armando | Armando Ocano | Adaptation | 1975 - 1980 | 5 | |
| Orjas, José | José Orjas | Actor | 1968 | 1 | |
| Olsson, Erik | Erik Olsson | Actor | 2022 | 1 | |
| O’Connor, Francis | Francis O’Connor | Set Designer | 2023 | 1 | |
| O’Clery, Joan | Joan O’Clery | Costume Designer | 2023 | 1 | |
| Oen, Hermine Svortevik | Hermine Svortevik Oen | | | | |
| Odegaard, Elin | Elin Odegaard | Actor | 2023 | 1 | |
| Onaodowan, Okierite | Okierite Onaodowan | Actor | 2023 | 1 | |
| Olsen, Ole | Ole Olsen | Actor, Composer | 1895 - 1922 | 18 | 1 |
| Oliver, Michael | Michael Oliver | Actor | 2011 | 1 | 1 |
| Olsen, Olaus | Olaus Olsen | Actor | 1884 - 1904 | 40 | 1 |
| Ottmann, Victor | Victor Ottmann | Translator | 1901 - 1902 | 9 | 1 |
| O'Connor, Joanna | Joanna O'Connor | Actor | 2007 - 2021 | 4 | 1 |
| Olesen, Kirsten | Kirsten Olesen | Actor | 1978 - 2011 | 12 | 1 |
| O'Connor, Peter, Dylan | Peter Dylan O'Connor | Actor | 2013 | 1 | 1 |
| O'Brien, Daniel | Daniel O'Brien | Actor | 2012 | 1 | 1 |
| Oakeshott, Owen | Owen Oakeshott | Actor | 2013 - 2014 | 11 | 1 |
| Odyja-Thacker, Nancy | Nancy Odyja-Thacker | Actor | 2003 | 1 | 1 |
| Oja, Tõnu | Tõnu Oja | Actor | 2007 | 1 | 1 |
| O'Reilly, Genevieve | Genevieve O'Reilly | Actor | 2011 | 1 | 1 |
| Odintsova, Polina | Polina Odintsova | Actor | 2012 | 1 | 1 |
| Otte, Carly | Carly Otte | Actor | 2013 | 1 | 1 |
| Ole, Antonio | Antonio Ole | | | | 1 |
| Ohlson, Monica | Monica Ohlson | | | | 1 |
| Orak, Aydin | Aydin Orak | Actor, Translator | 2010 | 16 | 2 |
| Ottesen, Marian Saastad | Marian Saastad Ottesen | Actor | 2006 - 2021 | 11 | 2 |
| Otnes, Ola | Ola Otnes | Actor | 1981 - 2020 | 128 | 2 |
| Osa, Liv Bernhoft | Liv Bernhoft Osa | Actor | 1993 - 2020 | 9 | 2 |
| Olausson, Hilde | Hilde Olausson | Actor, Musician | 1985 - 2015 | 8 | 2 |
| Olsson, Tove | Tove Olsson | Actor | 2008 | 10 | 2 |
| Ost, Kathrin | Kathrin Ost | Actor | 2010 - 2011 | 12 | 2 |
| Oechel, Hagen | Hagen Oechel | Actor | 2012 - 2015 | 2 | 2 |
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