Hermann Eduard Johannes Popitz (2 December 1884 – 2 February 1945) was a Prussian lawyer, finance minister and a member of the German Resistance against the government of Nazi Germany.

When the Nazis came to power on 30 January 1933, Popitz remained in charge of the Prussian Finance Ministry as Reichskommissar but was not named to the Reich cabinet formed by Adolf Hitler.

To mark the fourth anniversary of the Nazi regime on 30 January 1937, Hitler personally conferred the Golden Party Badge upon several non-Nazi members of the Reich and Prussian governments.

In the summer of 1943, Popitz conducted secret talks with Heinrich Himmler, whose support he sought to win for a coup d'état and whom he tried to convince to take part in attempts to negotiate with the western Allies for an acceptable peace deal.

Already in the autumn of that same year, Popitz was being watched by the Gestapo and indeed was arrested in Berlin on 21 July 1944, the day after Claus von Stauffenberg's unsuccessful attempt on Hitler's life at the Wolfsschanze in East Prussia.

After his arrest, Popitz told the Gestapo:"As somebody who was very familiar with conditions in the System period [the Weimar Republic], my view of the Jewish question was that the Jews ought to disappear from the life of the state and the economy.