Le Chesnay is a commune in the Yvelines department in the Île-de-France region in north-central France. It is located in the western suburbs of Paris 16.7 km (10.4 mi) from the center.On 1 July 1815, Napoleon's Grande Armée fought its last battle in Rocquencourt and Le Chesnay.
Le Chesnay is served by no station of the Paris Métro, RER, or suburban rail network. The closest station to Le Chesnay is Versailles – Rive Droite station on the Transilien Paris – Saint-Lazare suburban rail line. This station is located in the neighboring commune of Versailles, 2 km (1.2 mi) from the town center of Le Chesnay.