Marne

General data
- Water type: River
- Progression: Seine -> English channel -> Atlantic Ocean -> Planet Earth
- Climates: Temperate
- Continents: Europe
- Countries: France
Description
The Marne is a river in France, an eastern tributary of the Seine in the area east and southeast of Paris. It is 514 kilometres (319 mi) long. The river gave its name to the departments of Haute-Marne, Marne, Seine-et-Marne, and Val-de-Marne.