The Elverum Authorization () allowed the Cabinet of Norway to temporarily and legitimately assert absolute authority given that the Storting (the Norwegian parliament) was no longer able to convene in ordinary session in Oslo. The action was approved unanimously by the Storting in the town of Elverum on 9 April 1940, after the Norwegian Royal Family, the Cabinet, and the Storting had evacuated Oslo to evade capture by German troops in the course of Operation "Weserübung" during World War II.