Nazis who died in prison custody

Frits Clausen (12 November 1893 – 5 December 1947) was a far-right Danish politician and leader of the National Socialist Workers' Party of Denmark (DNSAP) before and during World War II.

General Fritz Lindemann (11 April 1894 – 22 September 1944) was a German officer in the Wehrmacht of Nazi Germany and member of the resistance to Adolf Hitler.
After serving in World War I, Lindemann participated in the suppression of the German Revolution of 1918–1919 as a member of the Freikorps. However, as a member of the Reichswehr and a loyalist to the Weimar Republic, he refused to participate in the Kapp Putsch.Lindemann served as commander of the 132nd Infantry Division from January 1942 to August 1943, before appointment as Chief of Staff of the Artillery Oberkommando des Heeres.Lindemann developed contacts with conspirators against Adolf Hitler including General Helmuth Stieff, and following the assassination of Hitler it was proposed that he would read the conspirators' proclamation to the German people over the radio, but he did not appear at the Bendlerblock on 20 July 1944 in order to do so. After the failure of the 20 July plot, he went into hiding. When the Gestapo came to arrest him, Lindemann tried to jump out of a window. However, he was shot in his leg and stomach, and later died in hospital from his injuries.
After standing trial for helping Lindemann at the People's Court, Erich and Elisabeth Gloeden, Hans Sierks and Carl Marks were all sentenced to death. They were executed by guillotine at Plötzensee Prison in September 1944.

Ulrich Heinrich Emil Richard Greifelt (8 December 1896 – 6 February 1949) was a German SS functionary and war criminal during the Nazi era. He was convicted at the RuSHA trial at Nuremberg, sentenced to life imprisonment, and died in prison.

Hans Heinz Zerlett (17 October 1892 – 6 July 1949) was a German screenwriter and film director.