| Onizawa, Yoko | Yoko Onizawa | Sound Designer | 1996 | 1 | |
| Onno, Ferdinand, | Ferdinand Onno | Actor | 1904 - 1938 | 9 | |
| Ono Seo, Rie | Rie Ono Seo | Lighting Designer | 2009 - 2010 | 2 | |
| Ono, Hacchaku | Hacchaku Ono | Dramaturg | 2009 | 3 | |
| Ono, Masutaro, | Masutaro Ono | Actor | 1913 | 1 | |
| Ono, Mizuho | Mizuho Ono | Actor | 1997 | 1 | |
| Ono, Shihoriko, | Shihoriko Ono | Actor | 1914 | 1 | |
| Ono, Tetsushi | Tetsushi Ono | Actor | 2009 | 1 | |
| Ono, Toshiaki | Toshiaki Ono | Actor | 2018 | 1 | |
| Ono, Y. | Y. Ono | Dramaturg | 2008 - 2009 | 3 | |
| Onodera, Shuji | Shuji Onodera | Director | 2013 | 1 | |
| Onofri, Stefano | Stefano Onofri | Actor | 1991 | 1 | |
| Onorato, Mr., | Mr. Onorato | Actor | 1893 | 2 | |
| Onsaker, Maren K., | Maren K. Onsaker (Maren K. Onsaker) | Actor | 1998 | 1 | |
| Onslow, Alexander | Alexander Onslow | Actor | 1932 | 1 | |
| Onslow, Michael | Michael Onslow | Actor | 1999 | 30 | |
| Onstad, Kari, | Kari Onstad | Actor | 1976 - 2018 | 60 | |
| Onsum, Per | Per Onsum | Actor | 1962 - 1963 | 4 | |
| Onsøjen, Ole, | Ole Onsøjen | Musical Director | 1906 | 1 | |
| Ontiveros, Montserrat | Montserrat Ontiveros | Actor | 2006 | 2 | |
| Onwumere, Toby | Toby Onwumere | Actor | 2014 | 1 | |
| Onyejekwe, Uton | Uton Onyejekwe | Actor | 2017 | 1 | |
| Ooms, Johan | Johan Ooms | Actor | 1975 | 2 | |
| Ooms, Richard | Richard Ooms | Actor | 1983 - 2008 | 10 | |
| Oosterveen, Mark | Mark Oosterveen | Actor | 2012 | 1 | |
| Oosterwijk, Nora | Nora Oosterwijk | Actor | 1956 | 3 | |
| Oosthoek, Peter | Peter Oosthoek | Actor | 1992 | 1 | |
| Oosthout, Nelly, | Nelly Oosthout | Actor | 1928 | 2 | |
| Oostveen, Anne | Anne Oostveen | Actor | 1978 | 1 | |
| Op gen Orth, Helga | Helga Op gen Orth | Actor, Adaptation, Director | 1992 | 4 | |
| Opaker, Eva | Eva Opaker | Actor | 1973 | 1 | |
| Opania, Bartosz | Bartosz Opania | Actor | 1997 | 1 | |
| Opdal, Karina, | Karina Opdal | Actor | 2000 | 1 | |
| Opdan, Kristin Aafløy, | Kristin Aafløy Opdan | Actor | 1996 - 2013 | 2 | |
| Opdyke, Ivy | Ivy Opdyke | Actor | 2018 | 1 | |
| Opedal, Herman Ljung, | Herman Ljung Opedal | Actor | 2010 | 1 | |
| Opeka, Janel | Janel Opeka | Costume Designer | 2003 | 1 | |
| Opel, Mr., | Mr. Opel | Actor | 1898 | 1 | |
| Opel, Rudolf, | Rudolf Opel | Actor | 1901 - 1912 | 3 | |
| Opela, H. Kevin | H. Kevin Opela | Actor | 1996 | 1 | |
| Opffer, Yvonne | Yvonne Opffer | Actor | 1987 | 1 | |
| Opfinger , Heinz | Heinz Opfinger | Actor | 1990 | 2 | |
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Contributors
