| Ohki, Yasushi | Yasushi Ohki | Director | 1955 - 1956 | 2 | |
| Olin, Kerstin | Kerstin Olin | Actor | 1953 | 2 | |
| Oy, Necmi | Necmi Oy | Actor | 1956 | 2 | |
| Opsahl, Svein, Eirik | Svein Eirik Opsahl | Actor | 1956 | 2 | |
| Odegard, Mary Sue | Mary Sue Odegard | Actor | 1963 | 2 | |
| Ollila, Yrjö | Yrjö Ollila | Costume Designer, Designer | 1930 | 2 | |
| Oppenheimer, Albert, M. | Albert M. Oppenheimer | Actor | 1931 | 2 | |
| Ostrižnaja, O. | O. Ostrižnaja | Lighting Designer | 1999 | 2 | |
| Oikonomidis, Kostas | Kostas Oikonomidis | Actor | 1934 | 2 | |
| O'Flyn, Audrey | Audrey O'Flyn | Actor | 1936 | 2 | |
| Oldenhof, Bouke | Bouke Oldenhof | Adaptation, Translator | 1999 | 2 | |
| Opgaard, John | John Opgaard | Actor, Designer | 1939 | 2 | |
| Orth, Philip | Philip Orth | Actor | 1940 | 2 | |
| O'Connell, Alice | Alice O'Connell | Actor | 1940 | 2 | |
| Orfanos, Lampros | Lampros Orfanos | Costume Designer, Designer | 1943 | 2 | |
| Orell, Heinrich | Heinrich Orell | Actor, Director | 1911 | 2 | |
| O'Connell, Richard | Richard O'Connell | Director | 1947 | 2 | |
| Ohoka, Kinji | Kinji Ohoka | Director, Translator | 1971 | 2 | |
| Orbán , Levente | Levente Orbán | Actor | 2016 | 2 | |
| Ognyanova, Rositsa | Rositsa Ognyanova | Actor | 2015 - 2016 | 2 | |
| Orhon, Coşkun | Coşkun Orhon (Coskun Orhon) | Actor | 1965 - 1972 | 2 | |
| Olivero, Franco | Franco Olivero | Actor | 1986 | 2 | |
| Ottesen, Thorbjørn | Thorbjørn Ottesen | Musician | 1993 - 1994 | 2 | |
| Oppel, Heinrich | Heinrich Oppel | Actor | 1889 | 2 | |
| Otto, Karl | Karl Otto | Actor | 1910 | 2 | |
| Ogden, Betty | Betty Ogden | Actor | 1969 | 2 | |
| O'Nians, Honor | Honor O'Nians | Designer | 1945 | 2 | |
| Onishi, Ayaka | Ayaka Onishi | Actor | 2018 | 2 | |
| Ohtaka, Akira | Akira Ohtaka | Actor | 2018 | 2 | |
| O’Riordan, Rachel | Rachel O’Riordan | Director | 2019 - 2020 | 2 | |
| Oron, Tamar | Tamar Oron | Actor | 2020 | 2 | |
| Ocina, Gabriel | Gabriel Ocina | Actor | 2018 - 2020 | 2 | |
| Ose, Victoria | Victoria Ose | Actor | 2020 | 2 | |
| Olmedo, Christian | Christian Olmedo | Actor | 2019 | 2 | |
| Odeen-Isbister, Sara | Sara Odeen-Isbister | Actor, Adaptation | 2020 | 2 | |
| Otten, Geeske | Geeske Otten | Dramaturg | 2006 - 2007 | 3 | |
| Okun, Alexander, | Alexander Okun | Designer | 1992 - 2003 | 3 | |
| Olenicki, Manfred | Manfred Olenicki | Actor | 1995 | 3 | |
| Ott, Sharon | Sharon Ott | Director | 1993 - 1998 | 3 | |
| Owen, John | John Owen | Sound Designer | 1996 - 1997 | 3 | |
| Orr, Lynn E. | Lynn E. Orr | Designer, Director, Lighting Designer | 1937 | 3 | |
| Orlandini, C., | C. Orlandini | Actor | 1891 | 3 | |
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