Karen Marie Dahlerup Andersen (1920–2018) was a Danish women's rights activist and a politician representing the Social Democrats.
Keen to support equal treatment of men and women, she served as editor of the party's magazine Frie Kvinder before entering the Folketing, first as a successor to members who had resigned, then as a member in her own right (1977–1981).
In the late 1980s, Dahlerup served on the municipal council of Løkken-Vrå, where she became deputy mayor.
In November 1942, she married the foreman Henry Dahlerup Andersen with whom she had two children, Lene (1943) and Hanne (1944).
She was editor of the party's journal for women Frie Kvinder (1966–60) and chair of its Family Committee (1967–74).