Þórunn Sveinbjarnardóttir (born 22 November 1965) is an Icelandic politician. A graduate of the University of Iceland and the Bologna Center of the Paul H. Nitze School of Advanced International Studies, she was Iceland's Minister for the Environment from 24 May 2007 to 1 February 2009. She was member of the Althing (Iceland's parliament) from 1999 to 2011, first elected as a member of Women's List, then the Social Democratic Alliance.