Name  | Functions | Event Dates | Events | Resources | ||
|---|---|---|---|---|---|---|
| Albert M. Oppenheimer | Actor | 1931 | 2 | |||
| CJ Oppermam | Actor | 2013 | 1 | |||
| Heinrich Oppermann | Actor | 1895 - 1925 | 13 | |||
| Leonore Oppermann | Actor | 1919 - 1922 | 3 | |||
| Peter Oppermann | Dramaturg | 2000 | 1 | |||
| Knut Opperud | Designer | 1994 | 1 | |||
| Frk. Oppi | Actor | 1941 | 1 | |||
| Giulio Oppi | Actor | 1948 - 1949 | 2 | |||
| Hans Oppliger | Actor | 1986 | 1 | |||
| Mr. Oppmar | Actor | 1879 | 1 | |||
| Jiří Opřátko | Actor | 1965 | 1 | |||
| Arve Opsahl | Actor | 1958 | 1 | |||
| Kristina Opsahl | Actor | 2004 - 2006 | 6 | |||
| Linda Opsahl | Actor | 2002 | 2 | 1 | ||
| Svein Eirik Opsahl | Actor | 1956 | 2 | |||
| Aksel Opsann | Actor | 1900 - 1928 | 66 | |||
| Bart Opsomer | Actor | 2001 | 1 | |||
| Cathrine Gåre Opstad | Costume Designer | 2005 - 2008 | 90 | |||
| Eva Cathrine Opstad | Designer | 2007 | 1 | |||
| Peder Opstad | Actor, Adaptation, Director, Producer | 2005 - 2010 | 183 | |||
| Virginia Opsvig | Costume Designer, Mask Maker | 1931 - 1936 | 4 | |||
| India Opzoomer | Actor | 2018 | 1 | |||
| Aydin Orak | Actor, Translator | 2010 | 16 | 2 | ||
| Rutledge Oraker | Actor | 1932 | 2 | |||
| Alev Oraloğlu | Actor | 2012 | 1 | |||
| Frederic-Winslow Oram | Actor | 1974 | 1 | |||
| Het Oranjehotel | ||||||
| Bronisław Oranowski | Actor, Translator | 1907 - 1911 | 3 | |||
| Aksel Orav | Actor | 1962 - 1997 | 5 | |||
| Matti Oravisto | Actor | 1968 | 1 | |||
| Irena Orawiec | Actor | 2014 | 5 | |||
| Dag Eirik Orbakk | Actor | 1985 | 2 | |||
| Attila Orbán | Actor | 2008 | 5 | |||
| György Orbán | Composer | 1972 - 2002 | 2 | 1 | ||
| Levente Orbán | Actor | 2016 | 2 | |||
| Peter Orban | Lighting Designer | 2011 | 8 | |||
| Anders Orbeck | Translator | 1936 - 2018 | 3 | 1 | ||
| Lisa Orberg | Actor | 1974 | 1 | |||
| Mandy Orchard | Actor | 2018 | 1 | |||
| Yvonne Q. Orchardson | Actor | 1913 | 1 | |||
| Isella Orchis | Actor | 1993 - 2013 | 4 | |||
| Walter Orchowski | Actor | 1906 | 1 | |||