Le Fossé is a former commune in the Seine-Maritime department in the Normandy region in northern France. On 1 January 2016, it was merged into the commune of Forges-les-Eaux.

A farming and forestry village situated by the banks of the Epte river in the Pays de Bray, some 35 miles (56 km) southeast of Dieppe at the junction of the D9 and the D915 roads.

Historical population of Le Fossé

Year	1962	1968	1975	1982	1990	1999	2006
Population	386	384	377	303	359	382	458
From the year 1962 on: No double counting—residents of multiple communes (e.g. students and military personnel) are counted only once.

• The church of St.Pierre & St.Paul, dating from the sixteenth century.

• Communes of the Seine-Maritime department