Augustin Sandtner (8 August 1893 – 11 October 1944) was a German Communist Party anti-war activist and party officer who served, briefly, as a member of the Prussian parliament ("Landtag"). When the Nazis took power at the start of 1933 he campaigned for several weeks against fascism and war. Following his arrest he survived more than eleven of the twelve Nazi years in state captivity, but was shot dead at the Sachsenhausen concentration camp by Nazi paramilitaries (SS) a few months before the end of the Second World War.