The Luxembourg Army is the national military of Luxembourg. Luxembourg has no navy, as the country is landlocked, or air force, although it does have aircraft. The Luxembourg Army was integrated into the Force Publique (Public Force) which included the Gendarmerie and the Police. The Gendarmerie was merged into the Grand Ducal Police in 2000. The army has been an all-volunteer force since 1967. It has a current strength of approximately 450 professional soldiers, 340 enlisted recruits and 100 civilians, and a total budget of $369 million, or 0.9% of GDP.

The army is under civilian control. The Commander-in-Chief is the Grand Duke. The professional head of the army is the Chief of Defence, currently Gaston Reinig. He answers to the civil Minister for Defence in the civilian government, currently Jean-Marie Halsdorf, in the Ministry of Foreign Affairs and Immigration. The Grand Duke and the Chief of Defence are the only generals, with colonels as Deputy Chief of Defence and head of the Military Training Centre.

Luxembourg (ⁱ/ˈlʌksəmbɜrɡ/ LUKS-əm-burg), officially the Grand Duchy of Luxembourg (Luxembourgish: Groussherzogtum Lëtzebuerg, French: Grand-Duché de Luxembourg, German: Großherzogtum Luxemburg, Dutch: Groothertogdom Luxemburg), is a landlocked country in western Europe, bordered by Belgium, France, and Germany. It has two principal regions: the Oesling in the North as part of the Ardennes massif, and the Gutland ("good country") in the south. Luxembourg has a population of over half a million people in an area of approximately 2,586 square kilometres (998 sq mi). A representative democracy with a constitutional monarch, it is ruled by a grand duke. It is now the world's only remaining sovereign grand duchy. The country has a highly developed economy, with the world's highest GDP (nominal) per capita according to the IMF. Its historic and strategic importance dates back to its founding as a Roman era fortress site and Frankish count's castle site in the Early Middle Ages. It was an important bastion along the Spanish Road when Spain was the principal European power influencing the whole western hemisphere and beyond in the 16th–17th centuries.