Marnes is the name or part of the name of three communes of France:
* Marnes, Deux-Sèvres in the Deux-Sèvres ''département''
*
Marnes-la-Coquette
Marnes-la-Coquette () is a commune in the western suburbs of Paris, France. Located from the centre of Paris, the town is situated in the Hauts-de-Seine department on the departmental border with Yvelines between the Parc de Saint-Cloud and the ...
in the Hauts-de-Seine ''département''
*
Saint-Jouin-de-Marnes
Saint-Jouin-de-Marnes (, literally ''Saint-Jouin of Marnes'') is a former commune in the Deux-Sèvres department in western France. On 1 January 2019, it was merged into the new commune Plaine-et-Vallées.