| Name | Functions | Event Dates | Events  | Resources | ||
|---|---|---|---|---|---|---|
| Vidal de Oliveira | Translator | 1949 - 1994 | 6 | |||
| Minni Oehl | Actor | 1995 | 6 | |||
| Helmut Oeser | Actor | 1955 - 2003 | 6 | |||
| Christiaan Olwagen | Adaptation, Director | 2015 - 2024 | 6 | |||
| Valerie Oberhof | Actor | 2002 - 2012 | 6 | 1 | ||
| Thomas Oberender | Dramaturg | 2003 - 2004 | 6 | 1 | ||
| Tanja Oetterli | Actor | 2003 | 6 | |||
| Göran Olsson | Actor | 2001 - 2006 | 6 | |||
| Minako Ohkawa | Actor | 2008 - 2009 | 6 | |||
| Jörg Ohrnberger | Actor | 2010 | 6 | |||
| Kristijan Ostanek | Actor | 2009 | 6 | |||
| Laurence Olivier | Actor | 1944 - 1965 | 6 | 1 | ||
| Andrew Olson | Actor | 2018 | 6 | |||
| Uwe Oelkers | Costume Designer, Designer | 1985 - 2010 | 7 | |||
| Kazimierz Okornicki | Actor, Director | 1908 - 1922 | 7 | |||
| Marcin Oleś | Composer | 2006 - 2009 | 7 | |||
| Agnieszka Olsten | Director | 2006 - 2009 | 7 | 1 | ||
| Otto Ottbert | Actor, Director | 1876 - 1906 | 7 | |||
| Alexander Otto | Actor, Designer | 1919 - 1966 | 7 | |||
| Bartłomiej Brat Oleś | Composer | 2006 - 2009 | 7 | |||
| Leonard Outram | Actor, Director | 1891 - 1897 | 7 | 1 | ||
| Lili Osmarr | Actor | 1911 - 1926 | 7 | |||
| Martina Otto | Actor | 1915 - 1925 | 7 | |||
| Anne Marie Ottersen | Actor | 1978 - 2014 | 7 | 1 | ||
| Linn Olsen | Actor | 1999 - 2000 | 7 | |||
| Lillian Olsen | Costume Designer | 2000 | 7 | |||
| Barbara Orson | Actor | 1968 - 1998 | 7 | |||
| Cecile O'Connor | Actor | 1973 | 7 | |||
| Rania Oikonomidou | Actor | 1976 - 2004 | 7 | |||
| Shelley O'Brien | Actor | 2005 | 7 | |||
| Raymond O'Brien | Actor | 1935 - 1937 | 7 | |||
| Eileen O'Brien | Actor | 2000 | 8 | 1 | ||
| Peter Orban | Lighting Designer | 2011 | 8 | |||
| Erik Ohlsson | Actor | 1878 - 1883 | 8 | |||
| Georg Ottmay | Actor | 1906 - 1961 | 8 | |||
| Armand Ozory | Actor | 1925 - 1952 | 8 | |||
| Sava Ognjanov | Actor, Director | 1905 - 1928 | 8 | |||
| Monica Ohlsson | Dramaturg, Translator | 2005 - 2009 | 8 | 1 | ||
| Hilde Olausson | Actor, Musician | 1985 - 2015 | 8 | 3 | ||
| Jakob Oschlag | Adaptation, Director | 1977 - 2001 | 8 | 1 | ||
| John Osborne | Adaptation, Translator | 1972 - 2011 | 8 | 1 | ||
| Josef Ostendorf | Actor | 1991 - 2016 | 8 | |||