| Ognjanov, Sava | Sava Ognjanov | Actor, Director | 1905 - 1928 | 8 | |
| Ohlsson, Monica | Monica Ohlsson | Dramaturg, Translator | 2005 - 2009 | 8 | 1 |
| Olausson, Hilde | Hilde Olausson | Actor, Musician | 1985 - 2015 | 8 | 3 |
| Oschlag, Jakob | Jakob Oschlag | Adaptation, Director | 1977 - 2001 | 8 | 1 |
| Osborne, John | John Osborne | Adaptation, Translator | 1972 - 2011 | 8 | 1 |
| Ostendorf, Josef | Josef Ostendorf | Actor | 1991 - 2016 | 8 | |
| Oriano, Nanouche | Nanouche Oriano | Puppet Designer, Video Designer | 2016 - 2017 | 8 | |
| Olier, Luz | Luz Olier | Actor | 2016 | 8 | |
| Olmi, Corrado | Corrado Olmi | Actor | 1977 - 1978 | 8 | |
| Oelkers, Uwe | Uwe Oelkers | Costume Designer, Designer | 1985 - 2010 | 7 | |
| Okornicki, Kazimierz | Kazimierz Okornicki | Actor, Director | 1908 - 1922 | 7 | |
| Oleś, Marcin | Marcin Oleś | Composer | 2006 - 2009 | 7 | |
| Olsten, Agnieszka | Agnieszka Olsten | Director | 2006 - 2009 | 7 | 1 |
| Ottbert, Otto | Otto Ottbert | Actor, Director | 1876 - 1906 | 7 | |
| Otto, Alexander | Alexander Otto | Actor, Designer | 1919 - 1966 | 7 | |
| Oleś, Bartłomiej Brat | Bartłomiej Brat Oleś | Composer | 2006 - 2009 | 7 | |
| Outram, Leonard | Leonard Outram | Actor, Director | 1891 - 1897 | 7 | 1 |
| Osmarr, Lili | Lili Osmarr | Actor | 1911 - 1926 | 7 | |
| Otto, Martina | Martina Otto | Actor | 1915 - 1925 | 7 | |
| Ottersen, Anne Marie | Anne Marie Ottersen | Actor | 1978 - 2014 | 7 | 1 |
| Olsen, Linn | Linn Olsen | Actor | 1999 - 2000 | 7 | |
| Olsen, Lillian | Lillian Olsen | Costume Designer | 2000 | 7 | |
| Orson, Barbara | Barbara Orson | Actor | 1968 - 1998 | 7 | |
| O'Connor, Cecile | Cecile O'Connor | Actor | 1973 | 7 | |
| Oikonomidou, Rania | Rania Oikonomidou | Actor | 1976 - 2004 | 7 | |
| O'Brien, Shelley | Shelley O'Brien | Actor | 2005 | 7 | |
| O'Brien, Raymond | Raymond O'Brien | Actor | 1935 - 1937 | 7 | |
| Odstrčilová, Liběna | Liběna Odstrčilová | Actor | 1919 - 1932 | 6 | |
| Orth, Elisabeth | Elisabeth Orth | Actor | 1971 - 1995 | 6 | |
| O'Connell, Deirdre | Deirdre O'Connell | Actor, Director | 1971 - 1985 | 6 | |
| O'Clery, Joan | Joan O'Clery | Costume Designer | 2000 - 2013 | 6 | 1 |
| Orling, E. | E. Orling | Designer | 1895 - 1896 | 6 | |
| Ol'čeva, M. | M. Ol'čeva | Actor | 1900 - 1924 | 6 | |
| Olsen, Albert | Albert Olsen | Actor | 1901 | 6 | |
| Osanai, Kaoru | Kaoru Osanai | Director | 1909 - 1928 | 6 | 1 |
| Ousdal, Bodil | Bodil Ousdal | Choreographer | 1985 - 1991 | 6 | |
| Omland, Marit Pedersen | Marit Pedersen Omland | Actor | 1993 | 6 | |
| Opsahl, Kristina | Kristina Opsahl | Actor | 2004 - 2006 | 6 | |
| Owenberg-Lyche, Ragnhild | Ragnhild Owenberg-Lyche | Actor | 1911 - 1922 | 6 | 6 |
| Obermüller, Hans | Hans Obermüller | Actor | 1971 - 1981 | 6 | |
| Otto, Julius | Julius Otto | Actor | 1880 - 1898 | 6 | |
| Ogăşanu, Virgil | Virgil Ogăşanu | Actor | 1969 - 2006 | 6 | 1 |
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