| Name | Functions | Event Dates  | Events | Resources | ||
|---|---|---|---|---|---|---|
| Stina Oscarson | Musician | 1997 | 1 | |||
| Sozi Osman | Actor | 1997 | 1 | |||
| Haval Omar | Lighting Designer | 1997 | 1 | |||
| Giuseppe Oristânio | Actor | 1997 - 1998 | 3 | |||
| Vera Oelschlegel | Director | 1997 - 2000 | 52 | |||
| Claudia Orlovsky | Choreographer | 1998 | 1 | |||
| Kellie Overbey | Actor | 1998 | 1 | 1 | ||
| Maren K. Onsaker | Actor | 1998 | 2 | |||
| Anders Schanche Olsen | Actor | 1998 | 1 | |||
| Natsuki Oh | Actor | 1998 | 1 | |||
| Akira Oyamada | Sound Designer | 1998 | 1 | |||
| Shingo Ohno | Actor | 1998 | 1 | |||
| Helena Okkola | Actor | 1998 | 3 | |||
| Ai Okada | Actor | 1998 | 1 | |||
| Johan Osuldsen | Choreographer | 1998 - 2000 | 3 | |||
| Jurate Onaityte | Actor | 1998 - 2000 | 4 | |||
| Yumiko Oyama | Actor | 1998 - 2001 | 4 | |||
| Thomas Olsson | Actor | 1998 - 2017 | 3 | 1 | ||
| Jonas Ohlin | Actor | 1999 | 1 | |||
| Paweł Okraska | Actor | 1999 | 1 | |||
| Michael Onslow | Actor | 1999 | 30 | |||
| Bibiana Ondrejková | Actor | 1999 | 1 | 1 | ||
| Aleksej Os'minin | Actor | 1999 | 1 | |||
| Arman Omid | Actor | 1999 | 1 | |||
| Patrick O'Connell | Actor | 1999 | 1 | 1 | ||
| Bouke Oldenhof | Adaptation, Translator | 1999 | 2 | |||
| Sean O'Brien | Actor | 1999 | 1 | |||
| Koji Okazaki | Designer | 1999 | 1 | |||
| Malte Ohl | Actor | 1999 | 1 | |||
| Benedetta Ori | Actor | 1999 | 2 | |||
| Chris Ohnemus | Dramaturg | 1999 - 2000 | 2 | |||
| O. Ovčinnikova | Actor | 1999 - 2000 | 2 | |||
| E. Olenina | Dancer | 1999 - 2000 | 2 | |||
| Linn Olsen | Actor | 1999 - 2000 | 7 | |||
| O. Ostrižnaja | Lighting Designer | 1999 - 2000 | 2 | |||
| Vidar Olaussen | Actor | 1999 - 2006 | 11 | |||
| Yoshihiro Okada | Actor | 1999 - 2006 | 2 | |||
| Anna Oliver | Costume Designer | 1999 - 2010 | 3 | |||
| Keiko Ogawa | Actor | 1999 - 2012 | 16 | |||
| Svein Olstad | Actor | 1999 - 2013 | 14 | |||
| Eileen O'Brien | Actor | 2000 | 8 | 1 | ||
| Raymond O'Neil | Actor | 2000 | 1 | |||