| Orr, Madeleine | Madeleine Orr | Actor | 1970 | 3 | |
| Orr, Terence | Terence Orr | Sound Designer | 1975 | 1 | |
| Orreblad, Rune | Rune Orreblad | Actor | 1961 | 1 | |
| Orrell, Xenia | Xenia Orrell | Actor | 1940 | 1 | |
| Orsborn, Lura | Lura Orsborn | Actor | 1928 | 1 | |
| Orsini, Elena | Elena Orsini | Actor | 2016 - 2017 | 11 | |
| Orsini, Luca | Luca Orsini | Assistant Director | 2015 | 1 | |
| Orsini, Umberto | Umberto Orsini | Actor | 1963 - 2020 | 39 | |
| Orska, Alina(?) | Alina(?) Orska | Actor | 1901 - 1903 | 2 | |
| Orska, Daisy | Daisy Orska | Actor | 1911 | 1 | |
| Orsky, Gudrun | Gudrun Orsky | Director | 2004 | 1 | 1 |
| Orsmaa, Taisto-Bertil | Taisto-Bertil Orsmaa | Adaptation, Director | 1983 - 1996 | 3 | 1 |
| Orsman, Neil | Neil Orsman | Actor | 1991 | 1 | |
| Orson, Barbara | Barbara Orson | Actor | 1968 - 1998 | 7 | |
| Orson, Diane | Diane Orson | Musician | 1975 | 1 | |
| Orstad, Kjell | Kjell Orstad | Lighting Designer | 1971 | 1 | |
| Orsza-Łukasiewicz, Janina | Janina Orsza-Łukasiewicz | Director | 1972 | 1 | |
| Országhová, Olga B. | Olga B. Országhová | Actor | 1929 | 1 | |
| Ortega, Ana Luna | Ana Luna Ortega | Video Designer | 2024 | 1 | |
| Ortega, - | - Ortega | Actor | 1919 | 1 | |
| Ortega, Carmen | Carmen Ortega | Actor | 1970 | 1 | |
| Ortega, Jessie, Montoya | Jessie Montoya Ortega | Actor | 2018 | 1 | |
| Ortega, Manuel | Manuel Ortega | Actor | 2019 | 1 | |
| Ortenzi, Oriana | Oriana Ortenzi | Actor | 2022 - 2024 | 2 | |
| Orth, Elisabeth | Elisabeth Orth | Actor | 1971 - 1995 | 6 | |
| Orth, Franz | Franz Orth | Actor | 2007 | 3 | |
| Orth, Frk. | Frk. Orth | Actor | 1918 | 2 | |
| Orth, Hubert | Hubert Orth | Actor | 1916 - 1917 | 2 | |
| Orth, Philip | Philip Orth | Actor | 1940 | 2 | |
| Orth, Theo | Theo Orth | Actor | 1900 | 1 | |
| Orth, Walther | Walther Orth | Actor | 1964 | 1 | |
| Orthmann, Ruth | Ruth Orthmann | Translator | 1994 | 1 | 1 |
| Orthmeyer, Katharina | Katharina Orthmeyer | Actor | 2004 | 1 | |
| Orthofer, Monika | Monika Orthofer | Actor | 1981 | 5 | |
| Orthous, Pedro | Pedro Orthous | Director | 1962 | 1 | |
| Ortiz, Alain | Alain Ortiz | Designer | 2006 | 3 | |
| Ortiz, Alexa | Alexa Ortiz | Actor | 2005 | 1 | |
| Ortiz, Carolina | Carolina Ortiz | Lighting Designer | 2022 | 1 | |
| Ortiz, Esperanza | Esperanza Ortiz | Actor | 1928 - 1929 | 9 | |
| Ortiz, Francisco | Francisco Ortiz | Actor | 2016 | 1 | |
| Ortiz, Gabe | Gabe Ortiz | Actor | 2022 | 1 | |
| Ortiz, Janine | Janine Ortiz | Dramaturg | 2020 | 1 | |
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