Écouen (French pronunciation: [ekwɑ̃] ) is a commune in the Val-d'Oise department, in the northern suburbs of Paris, France. It is located 18.4 km (11.4 mi) from the center of Paris. The 19th-century poet and playwright Pierre-Joseph Charrin (1784–1863) died in Écouen. The artist Louis Théophile Hingre lived and worked in Écouen.

Écouen houses the Château d'Écouen, home of the Montmorency family. This château, built during the Renaissance, houses the Musée national de la Renaissance, the largest Renaissance museum in France.

Historical population

Year	Pop.	±% p.a.
1968	3,887	—
1975	4,494	+2.09%
1982	4,338	−0.50%
1990	4,846	+1.39%
1999	7,084	+4.31%
2007	7,383	+0.52%
2012	7,253	−0.35%
2017	7,188	−0.18%
Source: INSEE

Écouen is served by Écouen – Ézanville station on the Transilien Paris – Nord suburban rail line. This station is located at the border between the commune of Écouen and the commune of Ézanville, on the Ézanville side of the border.

• Communes of the Val-d'Oise department

• Tourism office board (in French)
• Base Mérimée: Search for heritage in the commune, Ministère français de la Culture. (in French)
• Association of Mayors of the Val d'Oise (in French)
• Musée National de la Renaissance (in French)