Belgium–Luxembourg relations

Belgium–Luxembourg relations are the bilateral relations between the Kingdom of Belgium and Grand Duchy of Luxembourg. Both countries have a history of close cooperation, notably within the Belgium–Luxembourg Economic Union, Benelux and within the European Union. Both countries are also members of NATO and Organization for Security and Co-operation in Europe. Belgium and Luxembourg share a land border. The Belgian side of the border is mostly Luxembourg Province, with a small part of the German-speaking municipality of Burg-Reuland in Liège Province also bordering the Grand Duchy.

Belgium has an embassy in Luxembourg City and Luxembourg has an embassy in Brussels. From 12 November 1964 to 7 October 2000, the Grand Duchess consort of Luxembourg was Josephine-Charlotte, born a Princess of Belgium and wife of Grand Duke Jean of Luxembourg.