| Birth Date: | 22 May 1901 |
| Birth Place: | Örebro, Sweden |
| Death Date: | 20 December 1980 (aged 79) |
| Death Place: | Stockholm, Sweden |
| Sport: | Sailing |
| Club: | Royal Swedish Yacht Club |
| Show-Medals: | yes |
Dagmar Salén (née Mörner, 22 May 1901 – 20 December 1980) was a Swedish sailor. Together with her husband Sven Salén she won a bronze medal in the mixed 6 m class at the 1936 Summer Olympics, becoming the first Swedish woman to win an Olympic medal in sailing.
Salén was born in a noble family, and married Sven Salén in 1931. Their son Sven H. Salén (born 1939) became a lawyer and politician.