Neuilly-sur-Seine (French pronunciation: [nøji syʁ sɛn]) is a commune in the western suburbs of Paris, France. It is located 6.8 km (4.2 mi) from the center of Paris.

Although Neuilly is technically a suburb of Paris, it is immediately adjacent to the city and directly extends it. The area is composed of mostly wealthy, select residential neighbourhoods, as well as the headquarters of many corporations. It is often lumped together with some areas of the neighbouring 16th arrondissement of Paris as Auteuil-Neuilly-Passy, a compendium of "bourgeois" (i.e., upscale) neighbourhoods in Paris.