Deutsche Volksunion
After World War II, Wilhelm Crinius worked in private industry, serving as a director in the German branch of the Dutch Philips GmbH. He was appointed chairman of the board of directors of the "Ernst Düllmann GmbH" in 1971. On 18 June 1989, as a pensioner, Crinius ran for the European Parliament in Hesse as candidate for the right-wing German People's Union ("Deutsche Volksunion"). He died on 26 April 1997 in Stuhr-Fahrenhorst, Lower Saxony.