| Name | Functions | Event Dates  | Events | Resources | ||
|---|---|---|---|---|---|---|
| Tytti Oittinen | Director | 1992 - 1994 | 2 | 1 | ||
| Marceline Ouedraogo | Actor | 1992 | 1 | |||
| Zbigniew Olszewski | Actor | 1992 | 2 | |||
| Tine Oman | Actor | 1992 | 1 | |||
| Marc Olivere | Lighting Designer | 1992 | 1 | |||
| Gabriele Otto | Dramaturg | 1992 | 1 | |||
| Peter Oosthoek | Actor | 1992 | 1 | |||
| Ingo Ospelt | Actor | 1992 | 1 | |||
| Michael Olich | Costume Designer | 1992 | 1 | |||
| Lilita Ozoliņa | Actor | 1992 | 1 | |||
| Annie Otto | Actor | 1992 | 1 | |||
| Reiko Oimori | Actor | 1992 | 1 | |||
| Roos Ouwehand | Actor | 1992 | 1 | |||
| Sylvia Offermans | Actor | 1992 | 1 | |||
| Johannes Ohla | Mask Maker | 1992 | 1 | |||
| Ulrike Obermüller | Costume Designer | 1991 - 2016 | 2 | |||
| Josef Ostendorf | Actor | 1991 - 2016 | 8 | |||
| Kristin Olsoni | Assistant Director | 1991 - 2006 | 2 | |||
| Floor Oskam | Designer | 1991 - 1992 | 14 | |||
| Adri Overbeeke | Actor | 1991 - 1992 | 84 | |||
| Shinobu Ohtake | Actor | 1991 | 1 | |||
| Elin Osjord | Actor | 1991 | 1 | |||
| Neil Orsman | Actor | 1991 | 1 | |||
| Eva Otto | Actor | 1991 | 2 | |||
| James Otis | Actor | 1991 | 1 | |||
| Doc O'Brien | Actor | 1991 | 6 | |||
| Stefano Onofri | Actor | 1991 | 1 | |||
| Louis O´Byrne | Designer | 1991 | 1 | |||
| Robert Ormsby | Actor | 1991 | 1 | |||
| Trevor H. Olsen | Actor | 1991 | 1 | 1 | ||
| Frank Obermann | Actor | 1991 | 1 | |||
| Shinobu Okazaki | Designer | 1991 | 1 | |||
| Kaoru Ohsawa | Lighting Designer | 1991 | 1 | |||
| Urs Obrecht | Actor | 1991 | 1 | |||
| Pekka Ojamaa | Costume Designer, Designer | 1990 - 2001 | 9 | |||
| Heinz Opfinger | Actor | 1990 - 1991 | 2 | |||
| Tom Oleniacz | Actor | 1990 | 1 | |||
| Jack O'Brien | Director | 1990 | 1 | 1 | ||
| Imelda O'Reilly | Actor | 1990 | 1 | |||
| E. Opitz | Actor | 1990 | 1 | |||
| Ecke Olsson | Actor | 1990 | 1 | |||
| Stephan Olson | Designer | 1990 | 1 | |||