Heidi Sørensen (born 14 February 1970) is a Norwegian politician for the Socialist Left Party. With a Danish father, Sørensen held Danish citizenship in her early life. She was born in Levanger, and studied for a cand.mag. degree between 1989 and 1992. In her youth Sørensen was an active environmentalist, and was leader of Natur og Ungdom between 1993 and 1994, and later became leader of Friends of the Earth Norway between 1995 and 1998. She was also a working committee member in No to the EU from 1991 to 1995.