Bretteville-sur-Laize () is a commune in the Calvados department in the Normandy region in northwestern France.
The scene of heavy fighting following the Normandy landings, much of the town is of post-World War II construction.
Geography
The commune is made up of the following collection of villages and hamlets, Jacob Mesnil, Quilly, Le Beffeux, Les Écluses, L'Abbaye and Bretteville-sur-Laize.
The Commune with another 20 communes shares part of a 2,115 hectare, Natura 2000 conservation area, called the Vallée de l'Orne et ses affluents.
The river Laize, a tributary to the Orne, flows through the commune. In addition two streams also flow through the commune the Ruisseau de Corneville and the Ruisseau du Val Clair.