The Mouzon is a 63.3-kilometre (39.3 mi) river that traverses Vosges in Lorraine, and Haute-Marne in Champagne-Ardenne, in northeastern France. It rises in Serocourt and flows west then north to join the Meuse at Neufchâteau.
Coordinates: 48°07′12″N 5°52′24″E / 48.12000°N 5.87333°E / 48.12000; 5.87333