The Meuse (Dutch and German Maas, Latin Mosa) is a major European river, rising in France and flowing through Belgium and the Netherlands before draining into the North Sea. It has a total length of 925 km (575 miles).

The Meuse marked the Western border of the Holy Roman Empire from its creation in the 9th century until the annexation of most of Alsace and Lorraine by France through the Treaty of Westphalia (1648), and to some extent until 1792 when the Prince-Bishopric of Liège was also annexed to France. Its Belgian portion, part of the sillon industriel, was the first fully industrialized area in continental Europe. The Meuse is mentioned nostalgically in Das Lied der Deutschen.