| Name | Functions | Event Dates | Events | Resources  | ||
|---|---|---|---|---|---|---|
| Mayrata O'Wisiedo | Actor | 1968 | 1 | |||
| Paca Ojea | Actor | 2001 | 1 | |||
| Iñaki Otxoa | Actor | 1987 | 1 | |||
| Anders Ortman | Composer | 2020 | 5 | |||
| Amaka Okafor | Actor | 2020 - 2023 | 2 | |||
| Hugh O'Connor | Designer | 2014 | 1 | |||
| Oyin Oladejo | Actor | 2016 | 1 | |||
| Kim Jøran Olsen | Actor | 2020 | 1 | |||
| Victoria Ose | Actor | 2020 | 2 | |||
| Nadežda Osipova | Designer | 2016 | 1 | |||
| Artur Oščepkov | Choreographer | 2013 | 1 | |||
| Ljubov' Ostrovskaja | Actor | 2020 | 1 | |||
| Christian Olmedo | Actor | 2019 - 2020 | 2 | |||
| Federico Oliver | Director | 1902 - 1908 | 5 | |||
| Hossein Omidi | Actor | 2013 | 1 | |||
| Mohammad Omrani | Actor | 2006 | 1 | |||
| Elena Omidi | Actor | 2019 | 1 | |||
| Bruno Ouzeau | Actor | 2020 - 2023 | 2 | |||
| Alireza Oliai | ||||||
| Emil Olafsson | Actor | 2020 - 2024 | 2 | |||
| Sara Odeen-Isbister | Actor, Adaptation | 2020 | 2 | |||
| Efsane Odağ | Assistant Director | 2019 | 1 | |||
| Luka Omoto | Actor | 2006 | 1 | |||
| Gerti Obert | Actor | 1935 | 1 | |||
| Nanouche Oriano | Puppet Designer, Video Designer | 2016 - 2017 | 8 | |||
| Abigail Olshin | Actor | 2020 | 1 | |||
| Yvonne Orly | Actor | 1935 | 2 | |||
| Akitsu Orii | Musician | 2013 | 1 | |||
| Mathilde Ortscheidt | Actor | 2014 - 2015 | 2 | |||
| Antoine Oppenheim | Director | 2017 | 1 | |||
| Gérard Olivier | Actor | 2016 | 1 | |||
| Cliff Odle | Actor | 2021 | 1 | |||
| Nicole O'Donohue | Producer | 2015 | 1 | |||
| Bruce Odland | Composer | 2013 | 1 | |||
| Astrid Overå | Actor | 2009 | 1 | |||
| Frank Oberhäußer | Assistant Director | 2006 | 1 | |||
| Martin Oakley | Lighting Designer | 2021 | 1 | |||
| Tracy Oleinick | Costume Designer | 1 | ||||
| Nicolas Ossowski | Actor | 2021 - 2023 | 2 | |||
| John O'Kane | Actor | 2021 | 1 | |||
| Vilmos Oláh | Actor | 1988 | 1 | |||
| Steve Otton | Assistant Director | 1984 | 1 | |||