| Olty, Magda | Magda Olty | Actor | 1935 | 2 | |
| Ogata, Kikuko | Kikuko Ogata | Costume Designer | 1968 - 2010 | 2 | |
| Ornstein, Brigitte | Brigitte Ornstein | Actor | 1968 | 1 | |
| Oyamada, Munenori | Munenori Oyamada | Actor | 1968 | 1 | |
| Osanai, Minako | Minako Osanai | Actor | 1968 | 1 | |
| Ottosen, Edith | Edith Ottosen | Actor | 1955 | 4 | |
| Ostr, Alois | Alois Ostr | Actor | 1967 | 1 | |
| Ogawa, Hisao | Hisao Ogawa | Lighting Designer | 1967 | 1 | |
| Olson, Eric | Eric Olson | Actor | 2004 | 1 | |
| Ouellette, Joe | Joe Ouellette | Actor | 2004 | 1 | |
| Ortiz, Francisco | Francisco Ortiz | Actor | 2015 | 1 | |
| Oszter, Sándor | Sándor Oszter | Actor | 1978 - 2007 | 2 | |
| Owens, Charlotte | Charlotte Owens | Actor | 1967 | 1 | |
| Ortola, Kirsti | Kirsti Ortola | Actor | 1955 | 4 | |
| Okazaki, Tomomi | Tomomi Okazaki | Actor | 1967 | 1 | |
| Olthy, Magda | Magda Olthy | Actor | 1939 | 1 | |
| Otto, Anneliese | Anneliese Otto | Actor | 1966 | 1 | |
| Ott, Ludwig | Ludwig Ott | Actor | 1966 | 1 | |
| O'Connell, Hans | Hans O'Connell | Actor | 1966 | 1 | |
| Ohlsson, Marrit | Marrit Ohlsson | Actor | 1947 | 2 | |
| Oglesby, Aaron | Aaron Oglesby | Actor | 1966 | 1 | |
| Otto, Franz | Franz Otto | Actor | 1917 - 1924 | 3 | |
| Oeser, Wolfgang | Wolfgang Oeser | Actor | 1966 | 1 | |
| Ott, Isabella | Isabella Ott | Actor | 1966 | 1 | |
| Olson, James | James Olson | Actor | 1966 | 1 | |
| Opřátko, Jiří | Jiří Opřátko | Actor | 1965 | 1 | |
| Owens, James, D. | James D. Owens | Actor | 1965 | 1 | |
| Orley, Ray | Ray Orley | Actor | 1965 | 1 | |
| Olwagen, Christiaan | Christiaan Olwagen | Adaptation, Director | 2015 - 2016 | 4 | |
| Orosz, Helga | Helga Orosz | Actor | 2005 | 2 | |
| Ohhinata, Minoru | Minoru Ohhinata | Actor | 2002 | 1 | |
| Okazaki, Kazuhiko | Kazuhiko Okazaki | Actor | 2002 | 1 | |
| Olsavszky, Éva | Éva Olsavszky | Actor | 2002 | 1 | |
| Orbán, György | György Orbán | Composer | 1972 | 2 | |
| O'Byrne, Adam | Adam O'Byrne | Actor | 2002 | 1 | |
| Otto , Philipp | Philipp Otto | Actor | 2002 - 2016 | 11 | |
| Orlemann, Jed | Jed Orlemann | Actor | 2002 | 4 | |
| Olmsted, Richard | Richard Olmsted | Designer, Lighting Designer | 2002 - 2003 | 3 | |
| Otte, Jehuda | Jehuda Otte | Actor | 2002 | 1 | |
| Oggenfuss, Michael | Michael Oggenfuss | Designer, Lighting Designer | 2002 - 2003 | 66 | |
| Odor, Josh | Josh Odor | Actor | 2002 | 1 | |
| Ocel, Tim | Tim Ocel | Director | 2002 | 1 | |
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Contributors
