Blonville-sur-Mer (French pronunciation: [blɔ̃vil syʁ mɛʁ] ⓘ, literally Blonville on Sea) is a commune in the Calvados department in the Normandy region in northwestern France.

It is a seaside resort on the Côte Fleurie with a long sandy beach.

Blonville-sur-Mer is on the railway line from Deauville to Dives-sur-Mer.

The station building (Blonville-Bénerville) is no longer open but train services operate year-round at weekends as well as on week days during the summer season.

This Calvados geographical article is a stub.