Belgium–United Kingdom relations

Belgium and the United Kingdom maintain diplomatic and foreign relations. In addition, both countries' royal families are descended from the House of Saxe-Coburg and Gotha, with the British branch being known as the House of Windsor and the Belgian branch as the House of Belgium.

Both countries share common membership of the Atlantic Co-operation Pact, the Council of Europe, the European Court of Human Rights, the International Criminal Court, NATO, the OECD, the OSCE, the United Nations, and the World Trade Organization. Bilaterally the two countries have a Classified Information Protection Agreement, a Double Taxation Convention, and a Maritime Cooperation Agreement.