Günter Wirths (1 June 1911 – 26 January 2005) was a German chemist who was an authority on uranium production, especially reactor-grade. He worked at Auergesellschaft in the production of uranium for the Heereswaffenamt and its Uranverein project. In 1945, he was sent the Soviet Union to work on the Russian atomic bomb project. When he was released from the Soviet Union, he settled in West Germany, and worked at the Degussa company.