Sissel Marie Rønbeck (born 24 May 1950 in Hammerfest, Finnmark) is a Norwegian politician for the Labour Party. She was Minister of Administration and Consumer Affairs 1979–1981, Minister of Environmental Affairs 1986-1989, and Minister of Transport and Communications 1996-1997. Between 1981 and 1993 she was a parliamentary representative for Oslo in the Norwegian legislature, Storting. She is currently deputy director of the Norwegian Directorate for Cultural Heritage (Riksantikvaren), and a member of the Norwegian Nobel Committee.
Rønbeck attended Oslo Cathedral School, but did not complete her examen artium.