Günter Deckert (born 9 January 1940) is a German far-right political activist. He was the leader of the far-right National Democratic Party of Germany (NPD). He has served five years in prison in Germany for various offences, including Holocaust denial and incitement to racial hatred. He translated the Leuchter report, an investigation he commissioned from an American Holocaust denier which attempted to cast doubt on the feasibility of mass extermination via the gas chambers in the Holocaust.