Vidkun Abraham Lauritz Jonssøn Quisling 18 July 1887 – 24 October 1945) was a Norwegian politician. On 9 April 1940, with the German invasion of Norway in progress, he seized power in Norway.
From 1942 to 1945 he served as Minister-President, working with the occupying forces. His government, known as the Quisling regime, was dominated by ministers from Nasjonal Samling, the party he founded in 1933. Quisling was put on trial during the legal purge in Norway after World War II and found guilty of charges including embezzlement, murder and high treason. He was executed by firing squad at Akershus Fortress, Oslo, on 24 October 1945. The word quisling has since become a synonym for traitor.