| Ortega, Jessie, Montoya | Jessie Montoya Ortega | Actor | 2018 | 1 | |
| Oakleaf, Donovan | Donovan Oakleaf | Actor | 2018 | 1 | |
| O'Hearn, Susan, P. | Susan P. O'Hearn | Director | 2018 | 1 | |
| O'Donnell, Mary Katherine | Mary Katherine O'Donnell | Actor | 2018 | 1 | |
| Olson, Emerson | Emerson Olson | Musician | 2018 | 1 | |
| Osgood, Dylan | Dylan Osgood | Musician | 2018 | 1 | |
| Oates, Charlie | Charlie Oates | Director | 2018 | 1 | |
| Olson, Andrew | Andrew Olson | Actor | 2018 | 6 | |
| Ono, Toshiaki | Toshiaki Ono | Actor | 2018 | 1 | |
| Ogden, Betty | Betty Ogden | Actor | 1969 - 1972 | 2 | |
| O'Connor, Paul | Paul O'Connor | Actor | 1969 | 1 | |
| O'Nians, Honor | Honor O'Nians | Designer | 1945 - 1946 | 2 | |
| Orlowicz, Tadeusz | Tadeusz Orlowicz | Designer | 1964 | 1 | |
| Oxley, Matt | Matt Oxley | Actor | 2018 | 1 | |
| Oikonomaki, Grigoria | Grigoria Oikonomaki | Actor | 2018 | 1 | |
| O'Brady, Mary | Mary O'Brady | Director | 2018 | 1 | |
| Orchard, Mandy | Mandy Orchard | Actor | 2018 | 1 | |
| Oie, Austin | Austin Oie | Actor | 2016 | 1 | |
| Orr, Grace | Grace Orr | Actor | 2018 | 1 | |
| Osazuwa, Evelyn, Rasmussen | Evelyn Rasmussen Osazuwa | Actor, Composer | 2018 - 2019 | 4 | |
| Ongyerth, Gust | Gust Ongyerth | Director | 1940 | 1 | |
| Otten, Joe | Joe Otten | Adaptation | 2018 | 1 | |
| Ozono, Jyuri | Jyuri Ozono | Actor | 2003 | 1 | |
| Onodera, Shuji | Shuji Onodera | Director | 2013 | 1 | |
| Opdyke, Ivy | Ivy Opdyke | Actor | 2018 | 1 | |
| Otto, Driscoll | Driscoll Otto | Lighting Designer | 2018 | 1 | |
| Ossa, Francisco | Francisco Ossa | Actor | 2018 | 1 | |
| Onishi, Ayaka | Ayaka Onishi | Actor | 2018 | 2 | |
| Ohtaka, Akira | Akira Ohtaka | Actor | 2018 | 2 | |
| Owens, Anne Marie | Anne Marie Owens | Actor | 2018 | 1 | |
| O'Gara, Penn | Penn O'Gara | Costume Designer | 2019 | 1 | |
| Okonkwo, Noble | Noble Okonkwo | Actor | 2019 | 1 | |
| Ortega, Manuel | Manuel Ortega | Actor | 2019 | 1 | |
| Occhiogrosso, Anne | Anne Occhiogrosso | Director | 2019 | 1 | |
| Olasz, Lajos | Lajos Olasz | Actor | 1936 | 1 | |
| Oliver, Sarah, M. | Sarah M. Oliver | Costume Designer | 2019 | 1 | |
| O'Riordan, Rachel | Rachel O'Riordan | Director | 2015 - 2020 | 3 | |
| Omar, Gumrah | Gumrah Omar | Director | 2019 | 1 | |
| Oliverić, Andrijana | Andrijana Oliverić | Actor | 2016 | 1 | |
| Ogrizović, Milan | Milan Ogrizović | Translator | 1913 | 1 | |
| Ogorevc, Manca | Manca Ogorevc | Actor | 2016 | 1 | |
| Oron, Tamar | Tamar Oron | Actor | 2020 | 2 | |
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