Anton Adriaan Mussert (May 11, 1894, Werkendam, North Brabant – May 7, 1946) was one of the founders of the National Socialist Movement (NSB) in the Netherlands and its de jure leader. As such, he was the most prominent national socialist in the Netherlands before and during World War II. During the war, he was able to keep this position, due to the support he received from the Germans. After the war, he was convicted and executed for high treason.