| Oborotov, Yuri | Yuri Oborotov | Actor | 2012 | 2 | |
| Ottmar, Aurora Berentsen | Aurora Berentsen Ottmar | Actor | 2012 | 1 | |
| Olstad, Andrea | Andrea Olstad | Actor | 2012 | 2 | |
| Osvik, Erik Baltzek | Erik Baltzek Osvik | Actor | 2012 | 1 | |
| Offerdal, Sindre Strand | Sindre Strand Offerdal | Actor | 2012 - 2015 | 3 | |
| Oftedal, Stian | Stian Oftedal | Actor | 2012 | 2 | |
| Olsen, Thale Kvam | Thale Kvam Olsen | Costume Designer, Designer | 2013 | 4 | |
| Ovenstrøm, Halvor | Halvor Ovenstrøm | Musician | 2013 | 1 | |
| Ovrum, Arild | Arild Ovrum | Musician | 2013 | 1 | |
| Ordężanka, Janina | Janina Ordężanka | Actor | 1911 | 1 | |
| O'Connor, Kathleen | Kathleen O'Connor | Actor | 1912 | 1 | |
| Odstrčilová, Liběna | Liběna Odstrčilová | Actor | 1913 - 1922 | 3 | |
| Ohta, Sanjiro | Sanjiro Ohta | Translator | 1914 | 1 | |
| Ono, Shihoriko | Shihoriko Ono | Actor | 1914 | 1 | |
| Ozols, Jānis | Jānis Ozols | Actor | 1915 | 2 | |
| Orford, Cathleen | Cathleen Orford | Actor | 1913 - 1918 | 4 | |
| Osis, K. | K. Osis | Actor | 1916 | 1 | |
| Okornicka (Miłosz), Helena | Helena Okornicka (Miłosz) | Actor | 1916 | 1 | |
| Olsen, Tonny | Tonny Olsen | Actor | 1918 - 1924 | 5 | |
| Ortega, - | - Ortega | Actor | 1919 | 1 | |
| Olin, Anna | Anna Olin | Actor | 1919 | 1 | |
| Orlandini, Lia | Lia Orlandini | Actor | 1921 - 1922 | 5 | |
| Otáhalová, Lída | Lída Otáhalová | Actor | 1922 | 1 | |
| Olson, Jonas | Jonas Olson | Actor | 1922 | 1 | |
| Ono, Miyakichi | Miyakichi Ono | Actor | 1925 | 1 | |
| Owen, Reginald | Reginald Owen | Actor | 1926 - 1932 | 2 | |
| Ospenskaya, Maria | Maria Ospenskaya | Actor | 1932 | 1 | |
| Osipovič, Jakov | Jakov Osipovič | Actor | 1926 | 1 | |
| Orlamundt, Kai | Kai Orlamundt | Actor | 1926 | 1 | |
| Osborne, Eunice | Eunice Osborne | Actor | 1926 | 1 | |
| Olsen, Moroni | Moroni Olsen | Actor | 1927 | 1 | |
| Olland, Bill | Bill Olland | Actor | 1976 | 1 | |
| Oesterhelt, Ingrid | Ingrid Oesterhelt | Actor | 1973 | 1 | |
| Oelmann, Klaus | Klaus Oelmann | Actor | 1973 | 1 | |
| Orson, Barbara | Barbara Orson | Actor | 1968 - 1998 | 7 | |
| Orgill, Paul | Paul Orgill | Actor | 1973 | 1 | |
| Obermüller, Hans | Hans Obermüller | Actor | 1971 - 1981 | 6 | |
| Olsen, L. Katherine | L. Katherine Olsen | Actor | 1928 | 1 | |
| Oram, Frederic-Winslow | Frederic-Winslow Oram | Actor | 1974 | 1 | |
| Orson, Diane | Diane Orson | Musician | 1975 | 1 | |
| Oberschlick, Gerhard | Gerhard Oberschlick | Dramaturg | 1975 | 1 | |
| Olsen, Ingunn | Ingunn Olsen | Actor | 1978 | 1 | |
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