Anne Enger, formerly Anne Enger Lahnstein (born 9 December 1949), is a Norwegian politician who served as County Governor of Østfold from 2004 until 2015, and Leader of the Centre Party from 1991 to 1999, with opposition to the European Union. She was the front person of the successful "No to EU" campaign at the 1994 referendum. She was also the leader in the failed campaign against abortion on demand in Norway in the late 1970s.