Peter Heinrich Stangier (7 April 1898 – 12 December 1962) was a German Nazi Party politician and a Gruppenführer of the Sturmabteilung (SA) who served as the Deputy Gauleiter in northern Westphalia from 1931 to 1945.

[1] Following the lifting of the ban that had been imposed on the Nazi Party in the wake of the Beer Hall Putsch, he rejoined it on 1 August 1925 (membership number 16,676).

[2] From 1931 to 1933 he was in charge of personnel matters as the Gauorganisationsleiter (Gau Organization Leader) and he also served as a magistrate in the Gau-level Party disciplinary court (USCHLA).

[5] From November 1933 until the end of the Nazi regime in May 1945, Stangier was a member of the Reichstag as a deputy for electoral constituency 17 (North Westphalia), being reelected in 1936 and 1938.

After the conquest of Poland in the Second World War, Stangier was under consideration for one of the Gauleiter positions to be created in the conquered territory but he lost out to Arthur Greiser.