Hans Georg Heer (known as Hannes) (born 16 March 1941 in Wissen, Rhine Province) is a German historian, chiefly known for the Wehrmachtsausstellung (German Army Exhibition) in the 1990s.
While highly controversial at that time, the exhibition is nowadays widely credited with opening the eyes of the German public to the war crimes of the Wehrmacht committed on the East Front during World War II.
While having been suspended in 1999, the exhibit reopened in 2001 under the name "Crimes of the German Wehrmacht: Dimensions of a War of Annihilation 1941-1944".
The exhibitions were instrumental in the breaking down of the Myth of the clean Wehrmacht in Germany.