Cléon (French pronunciation: [kleɔ̃]) is a commune in the Seine-Maritime department in the Normandy region in northern France.

This city is known for its Renault factory, which manufactures engines and gearboxes.

For collectors of vintage cars, the name "Cléon" refers primarily to these two engines.

A small town situated inside a meander of the river Seine some 11 miles (18 km) south of Rouen, at the junction of the D7 and the D144 roads.

The French car manufacturer Renault has its principal engine and gearbox factory within the commune's territory, covering an area of 135 hectares (330 acres).