Biville-sur-Mer 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 new commune of Petit-Caux.

A farming village in the Pays de Caux, bordered by cliffs overlooking the English Channel, some 8 miles (13 km) northeast of Dieppe, at the junction of the D925 and the D313 roads.

The arms of Biville-sur-Mer are blazoned : Azure, the outline of the local church surrounding 2 swans respectant argent, all upon a base per fess wavy vert and azure. ('base' and 'sea')

Historical population of Biville-sur-Mer

Year	1962	1968	1975	1982	1990	1999	2006
Population	287	323	344	524	547	534	657
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.Remi, dating from the thirteenth century.

• Communes of the Seine-Maritime department