| Olson, Bror | Bror Olson | Actor | 1885 | 5 | |
| 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 | |
| Ott, Gisela | Gisela Ott | Actor | 1889 | 1 | |
| Oppel, Heinrich | Heinrich Oppel | Actor | 1889 | 2 | |
| Otto, Wilhelm | Wilhelm Otto | Actor | 1889 - 1898 | 5 | |
| Ozoliņš, Pēteris | Pēteris Ozoliņš (Pēteris Ozoliņš) | Actor, Director | 1889 - 1912 | 5 | |
| Osmarr, Otto | Otto Osmarr (Otto Osmarr) | Actor, Director | 1889 - 1919 | 23 | |
| Osten, Emil von | Emil von Osten | Actor | 1890 | 1 | |
| Ottomeyer, J. L. | J. L. Ottomeyer (J. L. Ottomeyer) | Actor | 1891 | 1 | |
| Olchowny, Teodor | Teodor Olchowny (Teodor Olchowny) | Actor | 1891 | 1 | |
| Oberländer, Heinrich | Heinrich Oberländer | Actor | 1891 | 1 | |
| Ottepp, Alexander | Alexander Ottepp | Actor | 1891 | 1 | |
| Orlandini, C. | C. Orlandini (C. Orlandini) | Actor | 1891 - 1892 | 3 | |
| Outram, Leonard | Leonard Outram (Leonard Outram) | Actor, Director | 1891 - 1897 | 7 | |
| Oberle, Thomas | Thomas Oberle (Thomas Oberle) | Actor | 1891 - 1904 | 2 | |
| Olin, Wilhelm | Wilhelm Olin (Wilhelm Olin) | Actor, Director | 1891 - 1919 | 2 | |
| Olszewski, Stanisław | Stanisław Olszewski (Stanisław Olszewski) | Actor | 1892 | 1 | |
| Orlandini, Leo | Leo Orlandini (Leo Orlandini) | Actor | 1892 - 1924 | 12 | |
| 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 | |
| Oliva, Mr. | Mr. Oliva | Actor | 1893 | 1 | |
| Olbrich, Irmgard | Irmgard Olbrich (Irmgard Olbrich) | Actor | 1893 - 1901 | 2 | |
| Oppel, Georg | Georg Oppel (Georg Oppel) | Actor | 1893 - 1926 | 9 | |
| Odemar, Fritz | Fritz Odemar (Fritz Odemar) | Actor, Director | 1893 - 1934 | 5 | |
| Odilon, Helene | Helene Odilon (Helene Odilon) | Actor | 1894 | 1 | |
| Oßmann, Otto | Otto Oßmann (Otto Oßmann) | Actor | 1894 | 1 | |
| Olszewski, Edward | Edward Olszewski (Edward Olszewski) | Actor | 1894 - 1902 | 3 | |
| Oliver, Olive | Olive Oliver (Olive Oliver) | Actor | 1894 - 1904 | 2 | |
| Orling, O. | O. Orling (O. Orling) | Designer | 1895 | 2 | |
| Olden, Hans | Hans Olden (Hans Olden) | Actor | 1895 | 1 | |
| Orling, E. | E. Orling (E. Orling) | Designer | 1895 - 1896 | 6 | |
| Olsen, Ole | Ole Olsen (Ole Olsen) | Actor, Composer | 1895 - 1922 | 18 | 1 |
| Oppermann, Heinrich | Heinrich Oppermann (Heinrich Oppermann) | Actor | 1895 - 1925 | 13 | |
| 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 | |
| Olmar, Gustav | Gustav Olmar | Actor | 1896 | 1 | |
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