Poissy is a commune in the western suburbs of Paris, France, located 23.8 km. (14.8 miles) from the center of Paris.
In 1561 it was the site of a fruitless Catholic-Huguenot conference, the Colloquy at Poissy. It is known for hosting the former Simca factory, now one of France's largest Peugeot factories.

Transport
Poissy is served by Poissy station on Paris RER line A and on the Transilien Paris – Saint-Lazare suburban rail line.