Ludwig Quidde (March 23, 1858, Bremen – March 4, 1941) was a German pacifist who is mainly remembered today for his acerbic criticism of German Emperor Wilhelm II and a politician. Quidde's long career spanned four different eras of German history: that of Bismarck (up to 1890); the Hohenzollern Empire under Wilhelm II (1888–1918); the Weimar Republic (1918–1933); and, finally, Nazi Germany.