Marianne Aasen (born 21 February 1967) is a Norwegian politician for the Labour Party. She was born in Bergen, but grew up in Moss. She graduated with a cand.polit. degree in 1993 from the University of Oslo. She worked as a journalist in Arbeiderbladet from 1991 to 1993 and Avisenes Nyhetsbyrå from 1993 to 1995. She was then information director of the European Movement Norway from 1998 to 2000. For twelve years she was married to Simen Agdestein, an International Grandmaster of chess and former Norwegian international footballer. The couple had two children, but they split in 2008.