Gerhard Friedrich Ernst Flesch (8 October 1909 – 28 February 1948) was a German Nazi executed for war crimes, specifically the torture and murder of members of the Norwegian resistance movement.He was an Oberregierungsrat and held the rank of SS-Obersturmbannführer (Lieutenant Colonel). He was born in Posen, Province of Posen, German Empire. He became a member of NSDAP in 1933.