Viroflay is a commune in the Yvelines department in the Île-de-France in north-central France. It is located in the south-western suburbs of Paris 14.1 km (8.8 mi) from the center and 3 km (1.9 mi) from the Palace of Versailles.
The town motto is Lux mea lex which is Latin for "Light is my law".
Viroflay is served by Viroflay – Rive Gauche station, which is an interchange station on Paris RER line C and on the Transilien Paris – Montparnasse suburban rail line.
It is also served by Viroflay – Rive Droite station on the Transilien Paris – Saint-Lazare suburban rail line and by Chaville – Vélizy station on Paris RER line C.