| Otter, Karl | Karl Otter | Actor | 1990 | 1 | |
| Olschewski, Gerhard | Gerhard Olschewski | Actor | 1990 | 1 | |
| Ohlsson, Lotta | Lotta Ohlsson | Actor | 1990 | 2 | |
| Oscarsson, Kjell | Kjell Oscarsson | Actor | 1990 | 2 | |
| Omundson, Timothy | Timothy Omundson | Actor | 1990 | 1 | |
| Ormerod, Nick | Nick Ormerod | Designer | 1990 | 1 | 1 |
| Otto, Victoria | Victoria Otto | Actor | 1990 | 2 | |
| O'Connor, Paul, Vincent | Paul Vincent O'Connor | Actor | 1990 | 3 | |
| Okamoto, Kennichi | Kennichi Okamoto | Actor | 1990 | 1 | |
| Ohki, Yu | Yu Ohki | Actor | 1990 | 1 | |
| Obara, Makoto | Makoto Obara | Sound Designer | 1990 | 1 | |
| Oguri, Yuriko | Yuriko Oguri | Actor | 1990 | 1 | |
| Omar, Ala | Ala Omar | Actor | 1990 | 1 | |
| Oeser, Wolf | Wolf Oeser | Actor | 1989 - 1994 | 6 | |
| O'Malley, Geraldine | Geraldine O'Malley | Costume Designer, Designer | 1989 - 1990 | 4 | |
| Oberthür, Martina | Martina Oberthür | Actor | 1989 | 4 | |
| Osborne, Duncan | Duncan Osborne | Actor | 1989 | 1 | |
| O'Neill, Errol | Errol O'Neill | Actor | 1989 | 1 | 1 |
| Ondra, Otto | Otto Ondra | Actor | 1989 | 1 | |
| Olschok, Herbert | Herbert Olschok | Director | 1988 - 2014 | 5 | |
| Ornest, Jiří | Jiří Ornest | Actor | 1988 - 2012 | 2 | |
| Ohl, Jürgen | Jürgen Ohl | Actor | 1988 | 1 | |
| Ogle, Natalie | Natalie Ogle | Actor | 1988 | 1 | 1 |
| O´Regan, Mark | Mark O´Regan | Actor | 1988 | 5 | |
| Opitz, Gerd | Gerd Opitz | Actor | 1988 | 1 | |
| Oláh, Vilmos | Vilmos Oláh | Actor | 1988 | 1 | |
| O'Toole, John | John O'Toole | Actor | 1987 - 2000 | 2 | |
| Olsen, Nils Bernt | Nils Bernt Olsen | Actor | 1987 - 1989 | 6 | |
| Opffer, Yvonne | Yvonne Opffer | Actor | 1987 | 1 | |
| Olsen, Max | Max Olsen | Actor, Composer | 1987 | 2 | |
| O´Donnell, Sarah | Sarah O´Donnell | Actor | 1987 | 2 | |
| Oliveri, Josephyne | Josephyne Oliveri | Actor | 1987 | 2 | |
| Oldeide, Aina | Aina Oldeide | Actor | 1987 | 1 | |
| Okkerse, Nico | Nico Okkerse | Actor | 1987 | 1 | |
| Olcay, Emin | Emin Olcay | Actor | 1987 | 1 | |
| Otxoa, Iñaki | Iñaki Otxoa | Actor | 1987 | 1 | |
| Oppliger, Hans | Hans Oppliger | Actor | 1986 | 1 | |
| Ogoun, Luboš | Luboš Ogoun | Choreographer | 1986 | 1 | |
| Olivero, Franco | Franco Olivero | Actor | 1986 | 2 | |
| Olausson, Hilde | Hilde Olausson | Actor, Musician | 1985 - 2015 | 8 | 3 |
| Oelkers, Uwe | Uwe Oelkers | Costume Designer, Designer | 1985 - 2010 | 7 | |
| Ousdal, Bodil | Bodil Ousdal | Choreographer | 1985 - 1991 | 6 | |
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