Marianne Andersen (born 26 March 1980 in Drammen)[1] is a Norwegian orienteering competitor.

[2] She received further medals at the 2010 World Championships in her home country of Norway.

She made a big comeback in 2016 her reward being a WOC silver medal at Middle Distance.

She placed 10th in the long distance at the 2023 World Orienteering Championships,[3] and won a bronze medal in the relay with the Norwegian team.

She has represented the clubs Nydalens SK, NTNUI and Konnerud IL.