Ussy () is a commune in the Calvados department in the Normandy region in northwestern France.
The commune is made up of the following collection of villages and hamlets, La Chesnaie, Le Marais, Ussy, La Baronnie, Le Haut du Pôt and Le Pôt.
The river Laizon flows through the commune. in addition three streams also flow through the commune, the Grand Etang, the Moussaye and the Leffard.
The Commune has three buildings and areas listed as a Monument historique