The Luxembourgish government in exile (Lëtzebuerger Exil Regierung, Gouvernement luxembourgeois en exil, Luxemburgische Exilregierung), also known as the Luxembourgish government in London (Lëtzebuerger Regierung zu London), was the government in exile of Luxembourg during the Second World War. The government was based in London between 1940 and 1944, while Luxembourg was occupied by Nazi Germany. It was led by Pierre Dupong, and also included three other Ministers. The head of state, Grand Duchess Charlotte, also escaped from Luxembourg after the occupation. The government was bipartite, including two members from both the Party of the Right (PD) and the Socialist Workers' Party (LSAP).
The government was located in 27 Wilton Crescent in Belgravia, London which now serves as the Luxembourgish Embassy in London. It was located only a few hundred metres from the Belgian government in exile in Eaton Square.
On 10 May 1940, neutral Luxembourg was invaded by German troops as part of a wider attack on France. The same day, the Luxembourgish government, then under the Dupong-Krier Ministry, fled the country.
The outbreak of World War II on 1 September 1939 and the ensuing Phoney War had made it possible to predict a violation of Luxembourgish neutrality, so that the government decided it would depart into exile if the country was completely occupied by German forces. While the departure of the Grand Duchess and her ministers was the result of a decision taken in advance, it was not well-prepared. The government left no written declaration explaining the reasons for its departure to a distressed population, nor any instructions for the commission charged with provisionally administering the country. The advance of German troops was so rapid that one of the ministers, Nicolas Margue, was captured by the invaders. So as not to compromise the action of his colleagues, he informed the Chamber of Deputies that due to his circumstances, he felt obliged to provisionally renounce the exercise of his functions as minister.