| Name | Functions | Event Dates  | Events | Resources | ||
|---|---|---|---|---|---|---|
| Alpho O'Reilly | Actor | 1948 | 1 | |||
| Gunnar Ollén | Adaptation | 1947 - 2005 | 2 | 1 | ||
| Marrit Ohlsson | Actor | 1947 - 1966 | 2 | |||
| Marta Obermaier | Actor | 1947 | 1 | |||
| Richard O'Connell | Director | 1947 | 2 | |||
| Ruth Ostrander | Actor | 1947 | 1 | |||
| Noboru Ogawa | Lighting Designer | 1946 | 1 | |||
| Ota Ornest | Actor | 1946 | 1 | |||
| Gunnar Olsson | Actor | 1946 | 1 | 1 | ||
| Joan O'Rourke | Actor, Costume Designer | 1945 - 1961 | 4 | |||
| Honor O'Nians | Designer | 1945 - 1946 | 2 | |||
| Joice Oliveira | Actor | 1945 | 1 | |||
| Dorothy Oberlin | Actor | 1945 | 1 | |||
| Sheila O'Reilly | Actor | 1945 | 1 | |||
| Maurice O'Brien | Actor | 1945 | 1 | |||
| Kay O'Brien | Actor | 1945 | 1 | |||
| Laurence Olivier | Actor | 1944 - 1965 | 6 | 1 | ||
| Ditta Oesch | Actor | 1944 | 1 | |||
| Júlíus Oddsson | Actor | 1944 | 1 | |||
| A. Oikonomopoulou | Actor | 1944 | 1 | |||
| Clementina Otero | Actor | 1944 | 1 | |||
| Andre Orkin | Actor | 1944 | 1 | |||
| Walter Outhwaite | Actor | 1944 | 1 | |||
| Gunnar Olram | Actor | 1943 - 2006 | 187 | 1 | ||
| Dan O'Connell | Actor, Director | 1943 - 1961 | 2 | |||
| Dorithy Osborne | Actor | 1943 | 1 | |||
| Tore Olsson | Actor | 1943 | 1 | |||
| Lampros Orfanos | Costume Designer, Designer | 1943 | 2 | |||
| Michael Oldham | Actor | 1942 - 1948 | 2 | |||
| Norman Olson | Actor | 1942 | 1 | |||
| Frk. Oppi | Actor | 1941 | 1 | |||
| Zdeněk Otava | Actor | 1941 | 1 | |||
| Frank Overton | Actor | 1941 | 1 | |||
| Isa Ostrow | Actor | 1941 | 1 | 1 | ||
| Philip Orth | Actor | 1940 | 2 | |||
| Xenia Orrell | Actor | 1940 | 1 | |||
| Alice O'Connell | Actor | 1940 | 2 | |||
| Muriel O'Leary | Actor | 1940 | 1 | |||
| Gust Ongyerth | Director | 1940 | 1 | |||
| Sally O'Neil | Actor | 1939 | 1 | |||
| Otto Osterwalder | Musician | 1939 | 1 | |||
| Magda Olthy | Actor | 1939 | 1 | |||