Ernst Schneller (8 November 1890 – 11 October 1944) was a German school teacher. In 1914 he volunteered to join the army when war broke out. Sent to fight on the Eastern Front, he became politicised and radicalised, especially as the ideas behind the Russian Revolution filtered through to the German troops. After the war he joined first the Social Democratic Party and then, in 1920, the recently launched Communist Party of Germany. He served as a regional member ("Landtagsabgeordneter") of parliament in the Saxon parliament ("Landtag") between 1921 and 1924, and then between 1924 and 1933 as a member ("Reichstagsabgeordneter") of the national parliament ("Reichstag"). He was arrested in 1933 and imprisoned. Transfer to the Sachsenhausen concentration camp followed in 1939.