Blainville-sur-Orne (French pronunciation: [blɛ̃vil syʁ ɔʁn] ⓘ, literally Blainville on Orne) is a commune in the Calvados department in the Normandy region in northwestern France.

Blainville-sur-Orne is on the west side of the Canal de Caen à la Mer, just south of Bénouville and the famous Pegasus Bridge of D-Day fame.

The town is also home to a Renault Trucks (formerly Saviem) manufacturing plant.

Directly across the canal from Blainville-sur-Orne is the fourth commercial French port for the importation of exotic wood, generally coming from the Gulf of Guinea.

The port also exports cereals that are produced in the area and has a silo capacity of 33,000 tons.