| Nielsen, Asta | Asta Nielsen | Actor | 1925 | 1 | |
| Nielsen, Bentine, | Bentine Nielsen | Actor | 1884 – 1889 | 2 | |
| Nielsen, Clay | Clay Nielsen | Actor | 2011 | 1 | |
| Nielsen, E., | E. Nielsen | Actor | 1886 | 1 | |
| Nielsen, Elna | Elna Nielsen | Costume Designer | 1953 | 1 | |
| Nielsen, Emma, | Emma Nielsen | Actor | 1896 – 1897 | 2 | |
| Nielsen, Esther | Esther Nielsen | Actor | 1928 | 1 | |
| Nielsen, Florence | Florence Nielsen | Actor | 1928 | 1 | |
| Nielsen, Fredrikke Luise, | Fredrikke Luise Nielsen | Actor | 1859 – 1878 | 14 | 1 |
| Nielsen, Gorm , Worsaae | Gorm Worsaae Nielsen | Actor | 1967 | 7 | |
| Nielsen, Håkon Thorstensen, | Håkon Thorstensen Nielsen | Actor | 2013 – 2017 | 2 | |
| Nielsen, Hans Otto | Hans Otto Nielsen | Actor | 1933 – 1937 | 10 | |
| Nielsen, Harald, | Harald Nielsen | Actor | 1854 – 1861 | 5 | 1 |
| Nielsen, Hayley | Hayley Nielsen | Actor | 2016 | 1 | |
| Nielsen, Helena, | Helena Nielsen | Actor | 2003 | 1 | |
| Nielsen, Helga, | Helga Nielsen | Actor | 1928 | 1 | |
| Nielsen, Holger | Holger Nielsen | Lighting Designer | 1935 | 2 | |
| Nielsen, Hr. | Hr. Nielsen | Actor | 1877 – 1881 | 9 | |
| Nielsen, Ib | Ib Nielsen | Actor | 1953 – 1954 | 1 | |
| Nielsen, Ingeborg | Ingeborg Nielsen | Costume Designer | 1976 – 1978 | 42 | |
| Nielsen, J. P. L., | J. P. L. Nielsen (J. P. L. Nielsen) | Actor | 1864 – 1870 | 3 | |
| Nielsen, Jakob | Jakob Nielsen | Actor | 1936 | 7 | |
| Nielsen, Jean, | Jean Nielsen | Actor | 1850 | 1 | |
| Nielsen, Johannes, | Johannes Nielsen | Actor, Director | 1901 – 1922 | 21 | |
| Nielsen, Jørgen | Jørgen Nielsen | Actor | 1983 | 1 | |
| Nielsen, Katja, | Katja Nielsen | Actor | 2013 | 1 | |
| Nielsen, Kenn, Lund | Kenn Lund Nielsen | Director, Producer | 2008 | 2 | |
| Nielsen, Kim, | Kim Nielsen | Costume Designer, Designer | 2004 | 2 | |
| Nielsen, Klaus | Klaus Nielsen | Actor | 1960 | 1 | |
| Nielsen, Kristine | Kristine Nielsen | Actor | 1983 | 4 | |
| Nielsen, Kurt, Erik | Kurt Erik Nielsen | Actor | 1960 | 1 | |
| Nielsen, Lars Emil | Lars Emil Nielsen | Actor, Dancer | 2017 – 2019 | 2 | |
| Nielsen, Leonora Alexandra, | Leonora Alexandra Nielsen | Actor | 1993 – 1994 | 1 | |
| Nielsen, Linda | Linda Nielsen | Actor | 1994 | 1 | |
| Nielsen, Lisa | Lisa Nielsen | Dancer | 2017 | 1 | |
| Nielsen, Mads, M. | Mads M. Nielsen | Actor | 2008 | 2 | 2 |
| Nielsen, Mari Lange, | Mari Lange Nielsen | Actor | 1995 | 1 | |
| Nielsen, Marianne, | Marianne Nielsen | Actor | 1985 – 2018 | 83 | |
| Nielsen, Marie | Marie Nielsen | Actor | 1913 | 4 | |
| Nielsen, Martinius, | Martinius Nielsen | Actor | 1886 – 1911 | 21 | 1 |
| Nielsen, Mathilde, | Mathilde Nielsen | Actor | 1898 – 1927 | 3 | |
| Nielsen, Meentje | Meentje Nielsen | Costume Designer | 2014 – 2016 | 3 | |
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