Neuilly-le-Vendin () is a commune in the Mayenne department in north-western France.
The commune is made up of the following collection of villages and hamlets, Marmaigne, Courd'houx, Neuilly-le-Vendin, Les Champs, Messigné and La Gouasnière.
The commune is located within the Normandie-Maine Regional Natural Park.
The river Mayenne flows through the commune.