| Name | Functions  | Event Dates | Events | Resources | ||
|---|---|---|---|---|---|---|
| Gertrude Obzyna | ||||||
| Het Oranjehotel | ||||||
| Kry ova | ||||||
| Luk! ov! | ||||||
| Olga Ovtsjinnikova | ||||||
| Edyta Olszówka | ||||||
| Aune Ollila | ||||||
| Aras Obed | ||||||
| A. Obuhov | ||||||
| Antonio Ole | 1 | |||||
| Lena Obst | 5 | |||||
| Craig OʼRegan | 3 | |||||
| Alireza Oliai | ||||||
| Monica Ohlson | 1 | |||||
| Nicolas Oubraham | ||||||
| Pierre Oudrey | Actor | 1973 | 1 | |||
| Joseph Olney | Actor | 1938 | 1 | |||
| E A Ozerova | Actor | 1907 | 1 | |||
| Nicholas Orloff | Actor | 1908 | 1 | 1 | ||
| Inga Olsen | Actor | 1877 - 1908 | 101 | 1 | ||
| Kikuyo Ohmori | Actor | 1993 | 1 | |||
| Åke Ohberg | Actor | 1954 | 1 | |||
| Cornelia Oberkogler | Actor | 1959 | 1 | 1 | ||
| Irena Oberska | Actor | 1958 | 1 | |||
| August Oddvar | Actor | 1900 - 1954 | 108 | 1 | ||
| Liběna Odstrčilová | Actor | 1919 - 1932 | 6 | |||
| Ditta Oesch | Actor | 1944 | 1 | |||
| Marcus Off | Actor | 2002 | 1 | 1 | ||
| Keiko Ogawa | Actor | 1999 - 2012 | 16 | |||
| Jonas Ohlin | Actor | 1999 | 1 | |||
| Shinobu Ohtake | Actor | 1991 | 1 | |||
| Mizuho Oka | Actor | 1928 | 1 | |||
| Marek Okopiński | Actor | 1958 | 1 | |||
| Paweł Okraska | Actor | 1999 | 1 | |||
| Shonosuke Okura | Actor | 2005 - 2013 | 14 | |||
| (Nuna) Młodziejowska Olchowska | Actor | 1905 - 1907 | 2 | |||
| Stian Olderkjær | Actor | 2006 | 1 | |||
| Manfred Olenicki | Actor | 1995 - 1998 | 3 | |||
| Aage Olschansky | Actor | 1981 | 1 | |||
| Augusta Olsen | Actor | 1907 | 10 | |||
| Odin Hørthe Omdal | Actor | 1995 - 1999 | 2 | 1 | ||
| Zsuzsanna Ongjerth | Actor | 1960 | 1 | |||