Vilhelm Buhl was Prime Minister of Denmark from 4 May 1942 to 9 November 1942 as head of the Unity Government during the German occupation of Denmark of World War II, until the Nazis ordered him removed. He was Prime Minister again from 5 May 1945 to 7 November 1945 as head of a unity government after the liberation of Denmark by the British Field Marshal Montgomery.

The prime minister of Denmark is the head of government in the Kingdom of Denmark comprising the three constituent countries: Denmark, Greenland and the Faroe Islands. Before the creation of the modern office, the kingdom did not initially have a head of government separate from its head of state, namely the monarch, in whom the executive authority was vested. The Constitution of 1849 established a constitutional monarchy by limiting the powers of the monarch and creating the office of premierminister. The inaugural holder of the office was Adam Wilhelm Moltke.