Neuilly-sur-Seine, often referred to simply as Neuilly, is an urban commune located in the Hauts-de-Seine department of the Île-de-France region in France. It serves as an immediate western suburb of Paris.
The commune is geographically distinguished by its proximity to the capital center, which it is separated from only by the Périphérique to the east and the Bois de Boulogne to the south.