Josef Kramer (November 10, 1906 – December 13, 1945) was the Commandant of the Bergen-Belsen concentration camp. Dubbed "The Beast of Belsen" by camp inmates, he was a notorious German Nazi war criminal, directly responsible for the deaths of thousands of people. He was detained by the British army after World War II, convicted of war crimes and hanged on the gallows in Hamelin prison by British executioner Albert Pierrepoint.