High Quality Content by WIKIPEDIA articles! The National Socialist German Workers' Party (German: About this sound Nationalsozialistische Deutsche Arbeiterpartei (help·info), abbreviated NSDAP), commonly known in English as the Nazi Party (from the Ger. pronunciation of Nationalsozialist), was a political party in Germany between 1919 and 1945. It was known as the German Workers' Party (DAP) before the name was changed in 1920.The party's last leader, Adolf Hitler, was appointed Chancellor of Germany by president Paul von Hindenburg in 1933. Hitler rapidly established a totalitarian regime known as the Third Reich.