Günther Hermann Oettinger (born 15 October 1953 in Stuttgart) is a German politician of the Christian Democratic Union (CDU). He became European Commissioner for Energy in the European Commission on 10 February 2010 and is affiliated with the European People's Party (EPP). Oettinger was Minister-President of the state of Baden-Württemberg between 2005 and 2010 and chairman of the CDU Baden-Württemberg between 2005 and 2010.
Oettinger embarked on his political career as a member of the Junge Union, the youth organisation of the CDU; he was chairman of the organization in Baden-Württemberg from 1983 to 1989. From 2001 to 2005 he was chairman of the CDU party in Nordwürttemberg (North Württemberg). He was also chairman of the federal committee for media politics of the CDU.
Oettinger has been a member of the State parliament (Landtag) of Baden-Württemberg since 1984. From 1991 to 2005 he was leader of the CDU parliamentary party.