Birger Dahlerus
（重定向自Dahlerus）
Johan Birger Essen Dahlerus (6 February 1891–8 March 1957, Stockholm) was a Swedish businessman, amateur diplomat, and friend of Hermann Göring who tried through diplomatic channels to prevent the Second World War. His futile diplomatic efforts during the days preceding the German invasion of Poland in 1939 are sometimes called the Dahlerus Mission.