Friedrich August Schack (27 March 1892 – 24 July 1968) was a German general during World War II.

He is best known for his pyrrhic defense of Caen after the allied invasion, September 1944, and for his brief leadership of the LXXXI Army Corps defending Aachen and the Siegfried Line.

Schack led his division in bloody combat in Orel, July 1943, during the Battle of Kursk, and suffered heavy losses.

On 4 September 1944 Schack became leader of the LXXXI Army corps, five badly mauled divisions, charged with defending Aachen and the Siegfried Line.

Beginning 15 November 1944 Schack led the LXXXV army corps in southern France and the Ardennes for one month.