Neuilly-sur-Seine (pronounced [nœji syʀ sɛn] in French) is a commune bordering the western limit of the city of Paris, France. It is located 6.8 kilometres (4.2 mi) from the center of Paris. It is one of the most densely populated municipalities in Europe.
Although Neuilly is technically a suburb of Paris, it is immediately adjacent to the city and directly extends it. The area is comprised 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.