Johann Niemann
| Johann Niemann | |
|---|---|
| Niemann c. 1941 | |
| Born | 4 August 1913 Völlen, Westoverledingen, German Empire | 
| Died | 14 October 1943 (aged 30) Sobibor extermination camp, Lublin Voivodeship, German-occupied Poland | 
| Allegiance | Nazi Germany | 
| Branch | Schutzstaffel | 
| Years of service | 1934–1943 | 
| Rank | SS-Untersturmführer | 
| Unit | SS-Totenkopfverbände | 
| Commands | Sobibor extermination camp | 
Johann Niemann (4 August 1913 – 14 October 1943) was a German SS officer and Holocaust perpetrator who was deputy commandant of Sobibor extermination camp during Operation Reinhard. He also served as a Leichenverbrenner (corpse cremator) at Grafeneck, Brandenburg, and Bernburg during the Aktion T4, the SS "euthanasia" program. Niemann was killed during the Sobibor prisoner uprising in 1943.