| Olsen, Karl Gustav | Karl Gustav Olsen | Actor | 1933 | 1 | |
| Olsen, Kathe B. | Kathe B. Olsen | Actor | 2002 | 1 | |
| Olsen, Kim | Kim Olsen | Actor | 2011 - 2019 | 2 | |
| Olsen, Kim, Jøran | Kim Jøran Olsen | Actor | 2020 | 1 | |
| Olsen, Kristoffer | Kristoffer Olsen | Actor | 2024 | 1 | |
| Olsen, L. Katherine | L. Katherine Olsen | Actor | 1928 | 1 | |
| Olsen, Lars Reynert | Lars Reynert Olsen | Actor | 2005 - 2008 | 90 | |
| Olsen, Lauritz | Lauritz Olsen | Actor | 1911 | 1 | |
| Olsen, Leif | Leif Olsen | Composer | 2009 | 1 | |
| Olsen, Lillian | Lillian Olsen | Costume Designer | 2000 | 7 | |
| Olsen, Linn | Linn Olsen | Actor | 1999 - 2000 | 7 | |
| Olsen, Lisbeth-Anita, Grimsø | Lisbeth-Anita Grimsø Olsen | Dancer | 2017 | 1 | |
| Olsen, Marie | Marie Olsen | Actor | 1901 | 1 | |
| Olsen, Mathilde Arschim | Mathilde Arschim Olsen | Actor | 2010 | 1 | |
| Olsen, Max | Max Olsen | Actor, Composer | 1987 | 2 | |
| Olsen, Mikkel Are | Mikkel Are Olsen | Actor | 1995 - 2007 | 3 | |
| Olsen, Mikkel, Are | Mikkel Are Olsen | Dancer | 2006 | 1 | |
| Olsen, Moroni | Moroni Olsen | Actor | 1927 | 1 | |
| Olsen, Nils Bernt | Nils Bernt Olsen | Actor | 1987 - 1989 | 6 | |
| Olsen, Olaus | Olaus Olsen | Actor | 1884 - 1904 | 45 | 2 |
| Olsen, Ole | Ole Olsen | Actor, Composer | 1895 - 1922 | 18 | 2 |
| Olsen, Ole Andreas | Ole Andreas Olsen | Actor | 1859 | 1 | |
| Olsen, Oliver | Oliver Olsen | Costume Designer | 1959 | 2 | |
| Olsen, Oscar | Oscar Olsen | Actor | 1930 | 1 | |
| Olsen, Ottilie | Ottilie Olsen | Actor | 1906 | 1 | |
| Olsen, Otto | Otto Olsen | Actor | 1913 | 1 | |
| Olsen, Ragnar | Ragnar Olsen | Adaptation, Translator | 1994 - 2018 | 58 | 1 |
| Olsen, Richard, K. | Richard K. Olsen | Actor | 1963 | 1 | |
| Olsen, Roar, Skau | Roar Skau Olsen | Sound Designer | 2013 | 1 | |
| Olsén, Ruth | Ruth Olsén | Actor | 1995 | 5 | |
| Olsen, Thale Kvam | Thale Kvam Olsen | Costume Designer, Designer | 2013 | 4 | |
| Olsen, Thea Arschim | Thea Arschim Olsen | Actor | 2010 | 1 | |
| Olsen, Thomas, Arne | Thomas Arne Olsen | Actor | 1953 | 1 | |
| Olsen, Tim | Tim Olsen | Actor | 2009 | 1 | |
| Olsen, Tonny | Tonny Olsen | Actor | 1918 - 1924 | 5 | |
| Olsen, Trevor H. | Trevor H. Olsen | Actor | 1991 | 1 | 1 |
| Olsen, Trygve | Trygve Olsen | Lighting Designer | 1985 - 1987 | 3 | 1 |
| Olsen, Tyler | Tyler Olsen | Actor | 2006 | 25 | |
| Olshin, Abigail | Abigail Olshin | Actor | 2020 | 1 | |
| Olska, Maria | Maria Olska | Actor | 1925 | 1 | |
| Olson, Andrew | Andrew Olson | Actor | 2018 | 6 | |
| Olson, Ardell | Ardell Olson | Actor | 1939 | 1 | |
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