| Name | Functions | Event Dates | Events  | Resources | ||
|---|---|---|---|---|---|---|
| Lothar Ostermann | Actor | 1960 - 1976 | 6 | |||
| Christopher Oden | Actor, Director | 1984 - 2001 | 6 | 1 | ||
| Nils Bernt Olsen | Actor | 1987 - 1989 | 6 | |||
| Doc O'Brien | Actor | 1991 | 6 | |||
| Wolf Oeser | Actor | 1989 - 1994 | 6 | |||
| Brendan O'Hea | Actor | 1993 - 1999 | 6 | 1 | ||
| Vidal de Oliveira | Translator | 1949 - 1994 | 6 | |||
| Minni Oehl | Actor | 1995 | 6 | |||
| Helmut Oeser | Actor | 1955 - 2003 | 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 | |||
| Michael Orme | Director, Producer | 1930 - 1936 | 5 | |||
| Henry Oscar | Actor, Director, Producer | 1930 - 1947 | 5 | |||
| Wilhelm Otto | Actor | 1889 - 1898 | 5 | |||
| Frk. Olsen | Actor | 1874 - 1876 | 5 | |||
| Pēteris Ozoliņš | Actor, Director | 1889 - 1912 | 5 | |||
| Fritz Odemar | Actor, Director | 1893 - 1934 | 5 | |||
| Frank Ostwald | Actor | 1917 - 1937 | 5 | |||
| Warner Oland | Actor | 1906 - 1908 | 5 | 1 | ||
| Jakob Oftebro | Actor | 2006 - 2022 | 5 | 1 | ||
| Tonny Olsen | Actor | 1918 - 1924 | 5 | |||
| Lia Orlandini | Actor | 1921 - 1922 | 5 | |||
| Arne H. Olsen | Lighting Designer | 1971 - 1978 | 5 | |||
| Raymond Omodei | Designer, Director | 1974 - 2001 | 5 | |||
| Alekos Oudinotis | Actor | 1975 - 1985 | 5 | |||
| Herbert Olschok | Director | 1988 - 2014 | 5 | |||
| Monika Orthofer | Actor | 1981 | 5 | |||
| Jānis Osis | Actor, Director | 1921 - 1943 | 5 | |||
| Charlie Otte | Actor | 1983 | 5 | |||
| Isabel Osca | Actor | 2001 | 5 | |||
| Baard Owe | Actor | 1964 - 2007 | 5 | |||
| Mark O´Regan | Actor | 1988 | 5 | |||
| Aksel Orav | Actor | 1962 - 1997 | 5 | |||
| Ruth Olsén | Actor | 1995 | 5 | |||
| Fran Overbury | Actor, Musical Director | 2001 | 5 | |||