| Olson, Grant | Grant Olson | Director | 2024 | 1 | |
| Olamina, Winter | Winter Olamina | Costume Designer | 2025 | 1 | |
| Owen, Brett | Brett Owen | Actor | 2025 | 1 | |
| Owen, Gary | Gary Owen | Adaptation | 2025 | 1 | |
| Orgler, Wolfgang | Wolfgang Orgler | Actor | 2024 | 1 | |
| Okolovich, Niko | Niko Okolovich | Actor | 2025 | 1 | |
| Osojnak, Michelle | Michelle Osojnak | Stage Manager | 2025 | 1 | |
| Ortega, Carlos | Carlos Ortega | Set Designer | 2025 | 1 | |
| Ousachi, Maya | Maya Ousachi | Actor | 2025 | 1 | |
| Okada, Takanari | Takanari Okada (岡田隆成) | Actor | 2025 | 1 | |
| O’Bryon-Champlin, Katie | Katie O’Bryon-Champlin | Actor | 2025 | 1 | |
| Otogawa, Tatsuko | Tatsuko Otogawa | Technician | 2025 | 1 | |
| Orndorff, Joette | Joette Orndorff | Director | 2025 | 1 | |
| Orynbaj, Ajši | Ajši Orynbaj (Айши Орынбай) | Actor | 2025 | 1 | |
| Ocampo, Sebastian | Sebastian Ocampo | Actor | 2025 | 1 | |
| Oda, Fumiko | Fumiko Oda (小田文子) | Puppet Designer | 2025 | 1 | |
| Obasi, Chuk | Chuk Obasi | Actor | 2024 | 1 | |
| Ortiz, Iván Tobar | Iván Tobar Ortiz | Director | 2025 | 1 | |
| Omeñaca, Jaime | Jaime Omeñaca | Actor | 2025 | 1 | |
| Oulette, Nancy | Nancy Oulette | Costume Designer | 2025 | 1 | |
| Ofek, Amir | Amir Ofek | Set Designer | 2025 | 1 | |
| Oxales, Johncen | Johncen Oxales | Actor | 2025 | 1 | |
| Owens, Ciarán | Ciarán Owens | Actor | 2025 | 1 | |
| Oppenheimer, Ray | Ray Oppenheimer | Lighting Designer | 2024 | 1 | |
| Ouitin Kouadjo, Charles | Charles Ouitin Kouadjo | Set Designer | 2022 | 1 | |
| Ortiz, Larry | Larry Ortiz () | Lighting Designer | 2025 | 1 | |
| Ortega, Natalia | Natalia Ortega () | Actor | 2025 | 1 | |
| Okhrimenko, Dmytro | Dmytro Okhrimenko (Дмитрий Охрименко) | Musician | 2025 | 1 | |
| Ohnemus, Chris | Chris Ohnemus | Dramaturg | 1999 - 2000 | 2 | |
| Oikonomopoulou, Pepi | Pepi Oikonomopoulou | Adaptation, Director | 2006 | 2 | |
| Olchowska, (Nuna) Młodziejowska | (Nuna) Młodziejowska Olchowska | Actor | 1905 - 1907 | 2 | |
| Ollén, Gunnar | Gunnar Ollén | Adaptation | 1947 - 2005 | 2 | 1 |
| Omdal, Odin Hørthe | Odin Hørthe Omdal | Actor | 1995 - 1999 | 2 | 1 |
| Organ, Alex | Alex Organ | Actor, Sound Designer | 2002 | 2 | |
| Osborne, Si | Si Osborne | Actor | 2001 | 2 | |
| Osswald, Leni | Leni Osswald | Costume Designer | 1955 - 1962 | 2 | |
| Oswald, Axsel | Axsel Oswald | Actor | 1936 - 1937 | 2 | |
| Otto, Miranda | Miranda Otto | Actor | 2002 - 2015 | 2 | 1 |
| Ourth, Georges | Georges Ourth | Actor, Director | 1978 - 1984 | 2 | |
| Oittinen, Tytti | Tytti Oittinen | Director | 1992 - 1994 | 2 | 1 |
| Osterberger, - | - Osterberger | Actor | 1971 | 2 | |
| Ovčinnikova, O. | O. Ovčinnikova | Actor | 1999 - 2000 | 2 | |
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