Gustav Laabs (born 20 December 1902-died 12 March 1980) was a German SS-Hauptscharführer ( NCO) and prior to that a Kriminalsekretär (Detective Sergeant). During the Second World War, he worked as a gas van operator at the Chełmno extermination camp in Wartheland. At the end of November 1963, Laabs and ten other people from the Chełmno concentration camp were tried at the Landgericht Bonn (de) regional court. Laabs was indicted for the murder of 100,000 people in the gas van and for personally shooting the few survivors. On 30 March 1964, Laabs was sentenced to 15 years of imprisonment and lost 10 years of citizenship rights for his part in the Holocaust. His sentence was later reduced to 13 years.Laabs died in 1980.