Tarja Cronberg (née Mattila, born 29 June 1943 in Helsinki) is a Finnish Green League politician who served as a member of the European Parliament from 2011 until 2014. Cronberg was Member of the Finnish Parliament 2003–2007. She chaired her party from 2005 until 2009 and was the Minister of Labour in the Finnish government from 2007 to 2009 as part of Matti Vanhanen's second cabinet.