| Name | Functions | Event Dates | Events  | Resources | ||
|---|---|---|---|---|---|---|
| Rositsa Ognyanova | Actor | 2015 - 2016 | 2 | |||
| Coşkun Orhon | Actor | 1965 - 1971 | 2 | |||
| Franco Olivero | Actor | 1986 | 2 | |||
| Thorbjørn Ottesen | Musician | 1993 - 1994 | 2 | |||
| Heinrich Oppel | Actor | 1889 | 2 | |||
| Karl Otto | Actor | 1910 - 1911 | 2 | |||
| Betty Ogden | Actor | 1969 - 1972 | 2 | |||
| Honor O'Nians | Designer | 1945 - 1946 | 2 | |||
| Ayaka Onishi | Actor | 2018 | 2 | |||
| Akira Ohtaka | Actor | 2018 | 2 | |||
| Rachel O’Riordan | Director | 2019 - 2020 | 2 | |||
| Tamar Oron | Actor | 2020 | 2 | |||
| Gabriel Ocina | Actor | 2018 - 2020 | 2 | |||
| Victoria Ose | Actor | 2020 | 2 | |||
| Christian Olmedo | Actor | 2019 - 2020 | 2 | |||
| Sara Odeen-Isbister | Actor, Adaptation | 2020 | 2 | |||
| Yvonne Orly | Actor | 1935 | 2 | |||
| Mathilde Ortscheidt | Actor | 2014 - 2015 | 2 | |||
| Noémie O'Farrell | Actor | 2022 | 2 | |||
| Rylee O’Rourke | Assistant Director, Producer | 2020 - 2022 | 2 | |||
| Pierre Oudrey | Actor | 1973 | 1 | |||
| Kunio Ohgitani | Director | 1980 | 1 | |||
| Joseph Olney | Actor | 1938 | 1 | |||
| E A Ozerova | Actor | 1907 | 1 | |||
| Nicholas Orloff | Actor | 1908 | 1 | |||
| Bahram Osmanov | Director | 2006 | 1 | |||
| Kikuyo Ohmori | Actor | 1993 | 1 | |||
| Åke Ohberg | Actor | 1954 | 1 | |||
| Cornelia Oberkogler | Actor | 1959 | 1 | |||
| Irena Oberska | Actor | 1958 | 1 | |||
| Ditta Oesch | Actor | 1944 | 1 | |||
| Marcus Off | Actor | 2002 | 1 | |||
| Makoto Ogasawara | Sound Designer | 1997 | 1 | |||
| Kathrine Ogletree | Costume Designer | 2003 | 1 | |||
| Jonas Ohlin | Actor | 1999 | 1 | |||
| Shinobu Ohtake | Actor | 1991 | 1 | |||
| Mizuho Oka | Actor | 1928 | 1 | |||
| Marek Okopiński | Actor | 1958 | 1 | |||
| Paweł Okraska | Actor | 1999 | 1 | |||
| Stian Olderkjær | Actor | 2006 | 1 | |||
| César Olivar | Costume Designer | 2004 | 1 | |||
| Aage Olschansky | Actor | 1981 | 1 | |||