| Olivier, Laurence | Laurence Olivier | Actor | 1944 - 1965 | 6 | 1 |
| Olsen, Arne, Thomas | Arne Thomas Olsen | Actor, Director | 1955 - 1963 | 19 | 1 |
| O'Rowe, Mark | Mark O'Rowe | Adaptation | 2016 | 1 | 1 |
| Olsen, Clifford, R. | Clifford R. Olsen | Actor, Director | 1963 | 2 | 1 |
| O'Connell, Moya | Moya O'Connell | Actor, Director | 2012 - 2024 | 2 | 1 |
| Odintsova, Polina | Polina Odintsova | Actor | 2012 | 1 | 1 |
| Otten, Marcel | Marcel Otten | Translator | 2012 - 2013 | 29 | 1 |
| Otte, Carly | Carly Otte | Actor | 2013 | 1 | 1 |
| Orlikowsky, Wazlaw | Wazlaw Orlikowsky | Adaptation, Choreographer, Director | 1956 - 1964 | 4 | 1 |
| Orbeck, Anders | Anders Orbeck | Translator | 1936 - 2018 | 3 | 1 |
| O'Connell, Patrick | Patrick O'Connell | Actor | 1999 | 1 | 1 |
| Osman, C.M. | C.M. Osman | Actor | 1928 | 1 | 1 |
| Ostrow, Isa | Isa Ostrow | Actor | 1941 | 1 | 1 |
| Olsson, Gunnar | Gunnar Olsson | Actor | 1946 | 1 | 1 |
| O'Hara, Jill | Jill O'Hara | Actor | 1971 | 1 | 1 |
| Ortmann, Wilfried | Wilfried Ortmann | Actor | 1973 | 1 | 1 |
| Onay, Yılmaz | Yılmaz Onay (Yilmaz Onay) | Translator | 2007 | 1 | 1 |
| Ohmen, Kristina | Kristina Ohmen | Dramaturg | 2018 | 1 | 1 |
| Ovanessian, Arby | Arby Ovanessian | Costume Designer, Designer, Director | 1970 | 3 | 1 |
| Ole, Antonio | Antonio Ole | | | | 1 |
| Ohlson, Monica | Monica Ohlson | | | | 1 |
| Oudrey, Pierre | Pierre Oudrey | Actor | 1973 | 1 | |
| Ohgitani, Kunio | Kunio Ohgitani | Director | 1980 | 1 | |
| Olney, Joseph | Joseph Olney | Actor | 1938 | 1 | |
| Ozerova, E A | E A Ozerova | Actor | 1907 | 1 | |
| Osmanov, Bahram | Bahram Osmanov | Director | 2006 | 1 | |
| Ohmori, Kikuyo | Kikuyo Ohmori | Actor | 1993 | 1 | |
| Ohberg, Åke | Åke Ohberg | Actor | 1954 | 1 | |
| Otten, Geeske | Geeske Otten | Dramaturg | 2006 | 3 | |
| Ohnemus, Chris | Chris Ohnemus | Dramaturg | 1999 - 2000 | 2 | |
| Oberska, Irena | Irena Oberska | Actor | 1958 | 1 | |
| Obzyna, Gertrude | Gertrude Obzyna | | | | |
| Odstrčilová, Liběna | Liběna Odstrčilová | Actor | 1919 - 1932 | 6 | |
| Oelkers, Uwe | Uwe Oelkers | Costume Designer, Designer | 1985 - 2010 | 7 | |
| Oesch, Ditta | Ditta Oesch | Actor | 1944 | 1 | |
| Ogasawara, Makoto | Makoto Ogasawara | Sound Designer | 1997 | 1 | |
| Ogawa, Keiko | Keiko Ogawa | Actor | 1999 - 2012 | 16 | |
| Ogletree, Kathrine | Kathrine Ogletree | Costume Designer | 2003 | 1 | |
| Ohland, Hans | Hans Ohland | Costume Designer, Designer | 1963 - 1981 | 4 | |
| Ohlin, Jonas | Jonas Ohlin | Actor | 1999 | 1 | |
| Ohtake, Shinobu | Shinobu Ohtake | Actor | 1991 | 1 | |
| Oikonomopoulou, Pepi | Pepi Oikonomopoulou | Adaptation, Director | 2006 | 2 | |
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