Lunain

The Lunain is a 51.4 km long river in the Yonne and Seine-et-Marne departments in north-central France. It is a right tributary of the Loing. Its source is in Yonne, less than 3 km south-west of Égriselles-le-Bocage. It joins the Loing at Épisy in Seine-et-Marne.

Départements and communes it runs through

 * Yonne: Égriselles-le-Bocage, Courtoin, La Belliole, Montacher-Villegardin, Chéroy
 * Seine-et-Marne: Vaux-sur-Lunain, Lorrez-le-Bocage-Préaux, Paley, Nanteau-sur-Lunain, Treuzy-Levelay, Nonville, La Genevraye, Villemer, Épisy