application of the law of 22 December 1789. It had been part of the former province of Normandy. The name "Orne-Inférieure" was originally proposed, but it was ultimately called Calvados after a group of rocks off its coast.

One popular legend ascribes its etymology to the Salvador, a ship from the Spanish Armada that sank by the rocks near Arromanches-les-Bains in 1588.