| Osa, Life Bernhoft | Life Bernhoft Osa (Life Bernhoft Osa) | Actor | 2010 | 1 | |
| Oddsson, Júlíus | Júlíus Oddsson (Júlíus Oddsson) | Actor | 1944 | 1 | |
| Oppermann, Heinrich | Heinrich Oppermann (Heinrich Oppermann) | Actor | 1895 - 1925 | 13 | |
| Oster, Teresina | Teresina Oster (Teresina Oster) | Actor | 1906 - 1909 | 4 | |
| O'Reilly, James | James O'Reilly (James O'Reilly) | Actor | 1981 | 2 | |
| Olivetti, Alessia | Alessia Olivetti (Alessia Olivetti) | Actor | 2008 - 2011 | 4 | |
| Olsen, Ole Andreas | Ole Andreas Olsen (Ole Andreas Olsen) | Actor | 1859 | 1 | |
| Olsen, Frk. | Frk. Olsen (Frk. Olsen) | Actor | 1874 - 1876 | 5 | |
| Olbrich, Julius | Julius Olbrich | Actor | 1876 - 1910 | 16 | |
| Otto-Martineck, Rosa | Rosa Otto-Martineck (Rosa Otto-Martineck) | Actor | 1876 | 1 | |
| Olsson, Bror | Bror Olsson (Bror Olsson) | Actor | 1877 - 1928 | 15 | |
| Olsen, - | - Olsen (- Olsen) | Actor | 1883 | 1 | |
| Orlamundt, Hans | Hans Orlamundt (Hans Orlamundt) | Actor | 1877 - 1880 | 13 | |
| Ottomeyer, Hans Leonard | Hans Leonard Ottomeyer (Hans Leonard Ottomeyer) | Actor | 1878 | 1 | |
| Ohlsson, Erik | Erik Ohlsson (Erik Ohlsson) | Actor | 1878 - 1883 | 8 | |
| Oppmar, Mr. | Mr. Oppmar (Mr. Oppmar) | Actor | 1879 | 1 | |
| Offel-Kley, Van | Van Offel-Kley (Van Offel-Kley) | Actor | 1880 | 1 | |
| Ohlson, - | - Ohlson (- Ohlson) | Actor | 1882 | 1 | |
| Otterström, Ludvig | Ludvig Otterström (Ludvig Otterström) | Actor | 1883 - 1885 | 9 | |
| Olsen, Olaus | Olaus Olsen (Olaus Olsen) | Actor | 1884 - 1904 | 40 | 1 |
| Ottesen, Rasmus | Rasmus Ottesen (Rasmus Ottesen) | Actor | 1902 - 1926 | 18 | |
| Olsson, Mr. | Mr. Olsson (Mr. Olsson) | Actor | 1886 | 1 | |
| Olin, Vilhelm | Vilhelm Olin (Vilhelm Olin) | Actor | 1886 - 1919 | 2 | |
| Olander, - | - Olander (- Olander) | Actor | 1887 | 1 | |
| Oeser, Anna | Anna Oeser (Anna Oeser) | Actor | 1888 | 1 | |
| Ott, Mr. | Mr. Ott (Mr. Ott) | Actor | 1889 | 2 | |
| Oberle, Thomas | Thomas Oberle (Thomas Oberle) | Actor | 1891 - 1904 | 2 | |
| Ottomeyer, J. L. | J. L. Ottomeyer (J. L. Ottomeyer) | Actor | 1891 | 1 | |
| Olchowny, Teodor | Teodor Olchowny (Teodor Olchowny) | Actor | 1891 | 1 | |
| Olszewski, Stanisław | Stanisław Olszewski (Stanisław Olszewski) | Actor | 1892 | 1 | |
| Olbrich, Irmgard | Irmgard Olbrich (Irmgard Olbrich) | Actor | 1893 - 1901 | 2 | |
| Onorato, Mr. | Mr. Onorato (Mr. Onorato) | Actor | 1893 | 2 | |
| Olander, Albert | Albert Olander (Albert Olander) | Actor | 1893 | 2 | |
| Orlop, Hermann | Hermann Orlop (Hermann Orlop) | Actor | 1893 | 1 | |
| Oppel, Georg | Georg Oppel (Georg Oppel) | Actor | 1893 - 1926 | 9 | |
| Oliver, Olive | Olive Oliver (Olive Oliver) | Actor | 1894 - 1904 | 2 | |
| Olszewski, Edward | Edward Olszewski (Edward Olszewski) | Actor | 1894 - 1902 | 3 | |
| Oßmann, Otto | Otto Oßmann (Otto Oßmann) | Actor | 1894 | 1 | |
| Olden, Hans | Hans Olden (Hans Olden) | Actor | 1895 | 1 | |
| Oberndorfer, Siegfrid | Siegfrid Oberndorfer (Siegfrid Oberndorfer) | Actor | 1896 | 1 | |
| Ouvrier, M. | M. Ouvrier (M. Ouvrier) | Actor | 1896 | 1 | |
| Otto, Heinrich | Heinrich Otto (Heinrich Otto) | Actor | 1896 | 1 | |
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