| Odle, Cliff | Cliff Odle | Actor | 2021 | 1 | |
| Overå, Astrid | Astrid Overå | Actor | 2009 | 1 | |
| Ossowski, Nicolas | Nicolas Ossowski | Actor | 2021 | 1 | |
| O'Kane, John | John O'Kane | Actor | 2021 | 1 | |
| Oláh, Vilmos | Vilmos Oláh | Actor | 1988 | 1 | |
| Op de Beeck, Theo | Theo Op de Beeck | Actor | 1961 | 1 | |
| O'Brien, Joseph | Joseph O'Brien | Actor | 1960 | 1 | |
| Osborn, Andrew | Andrew Osborn | Actor | 1951 | 1 | |
| O'Connor, Loyola | Loyola O'Connor | Actor | 1916 | 1 | |
| Ortiz, Gabe | Gabe Ortiz | Actor | 2022 | 1 | |
| Oftebro, Jonas Hoff | Jonas Hoff Oftebro | Actor | 2022 | 1 | |
| Ohlinger, Kristie | Kristie Ohlinger | Actor | 2022 | 1 | |
| O'Farrell, Noémie | Noémie O'Farrell | Actor | 2022 | 2 | |
| Omerović, Aldin | Aldin Omerović | Actor | 2022 | 1 | |
| Orozco, Carolina | Carolina Orozco | Actor | 2022 | 1 | |
| Ortenzi, Oriana | Oriana Ortenzi | Actor | 2022 | 1 | |
| Ou, Daisy | Daisy Ou | Actor | 2022 | 1 | |
| Olsen, Brian | Brian Olsen | Actor | 2022 | 2 | |
| O'Brien, Meredith | Meredith O'Brien | Actor | 2022 | 1 | |
| Ooi, Mike | Mike Ooi | Actor | 2022 | 1 | |
| Ošavkova, Sonja | Sonja Ošavkova (Соња Ошавкова) | Actor | 2013 | 1 | |
| Olivar, Mr | Mr Olivar | Actor | 1900 | 2 | |
| Ouisem, Abdellaoui | Abdellaoui Ouisem | Actor | 2022 | 1 | |
| Oteyza, Ramón | Ramón Oteyza | Actor | 1975 | 1 | |
| Olier, Luz | Luz Olier | Actor | 2016 | 8 | |
| Olteanu , Stefan | Stefan Olteanu | Actor | 2022 | 1 | |
| Oliva, Mr. | Mr. Oliva | Actor | 1893 | 1 | |
| Orjas, José | José Orjas | Actor | 1968 | 1 | |
| Olsson, Erik | Erik Olsson | Actor | 2022 | 1 | |
| Obzyna, Gertrude | Gertrude Obzyna (Gertrude Obzyna) | | | | |
| Oranjehotel, Het | Het Oranjehotel (Het Oranjehotel) | | | | |
| Oslo, in | in Oslo (in Oslo) | | | | |
| ova, Kry | Kry ova (Kry ova) | | | | |
| ov!, Luk! | Luk! ov! (Luk! ov!) | | | | |
| Ovtsjinnikova, Olga | Olga Ovtsjinnikova (Olga Ovtsjinnikova) | | | | |
| Opøien-Sigurth, Lydia | Lydia Opøien-Sigurth (Lydia Opøien-Sigurth) | | | | |
| Olszówka, Edyta | Edyta Olszówka | | | | |
| Ollila, Aune | Aune Ollila | | | | |
| Obed, Aras | Aras Obed | | | | |
| Obuhov, A. | A. Obuhov | | | | |
| Ole, Antonio | Antonio Ole | | | | 1 |
| Obst, Lena | Lena Obst | | | | 5 |
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