Herbert Robert Gerhard Fust (1 June 1899 – 11 November 1974) was a German agricultural estate manager who belonged to the Nazi Party and its paramilitary unit, the Sturmabteilung (SA).

Troops under his command were actively involved in the Kristallnacht pogrom against the Jews in November 1938 and destroyed dozens of synagogues.

Following the fall of the Nazi regime, he underwent denazification procedures and was brought up on charges by a German court in 1952 but was acquitted due to insufficient evidence.

Fust was born into a large landowning family in Langenfelde (today, part of Glewitz), then in western Pomerania.

Turning eighteen-years-old, he enlisted for service with the Imperial German Army as a one-year volunteer, and fought in the First World War from 1917 to 1918 in a machine gun company.

He was promoted to Unteroffizier in 1918 and, from December 1918 to May 1919, he was a member of the Graf Kanitz battalion, a component of the Iron Brigade, a Freikorps unit fighting in Courland.

He then joined another paramilitary group formed by the former Freikorps commander, Gerhard Roßbach, and remained with it until late 1930.

Specifically, he was accused of attending wild, drunken parties, engaging in sexual affairs and publicly visiting bordellos.

He could have been expelled from the Party, and only intervention on his behalf by the SA-Stabschef, Viktor Lutze, and the powerful Gauleiter of Hamburg, Karl Kaufmann, succeeded in reducing the punishment to a formal reprimand.

[8] On 26 August 1939, Fust was conscripted into the German Army and fought in the Battle of France and later with a panzer-pioneer unit in North Africa, where he was wounded in 1941.

He was charged by the Wiesbaden Regional Court, but was acquitted on 25 July 1952 because his guilt could not conclusively be proven due to a lack of evidence.