Marne Marne can refer to:
Places France
*Marne (river), a tributary of the Seine
*Marne (department), a département in northeastern France named after the river
* La Marne, a commune in western France
*Marne, a legislative constituency (France)
Nethe ...
department
Department may refer to:
* Departmentalization, division of a larger organization into parts with specific responsibility
Government and military
*Department (administrative division), a geographical and administrative division within a country, ...
in northeastern France. On 1 January 2023, it was merged into the new commune of Cœur-de-la-Vallée.