Cerisy Forest (forêt de Cerisy or forêt de Balleroy) is a beech woodland (75% of the land), located in the French Calvados and Manche departments.
Since 1976 it has been a national nature reserve managed by the National Forests Office. Its goals include conservation of an endemic golden sub-species of carabus auronitens, which is protected at national level.
Fauna in the woodland includes roe deer, boars, badgers and foxes.
Bird species include black woodpecker, middle spotted woodpecker and long-eared owl. Amphibians and insects include the golden carabus auronitens (Chrysocarabus auronitens ssp cupreonitens), Alpine newt, palmate newt, agile frog and salamanders. There are also butterflies and reptiles including the adder and common lizard.
Cerisy Forest is made up 75% of beech, 12% oak and 3% Scots pine. Other trees and shrubs include birch, chestnut, black alder, holly, knee holm, walnut. Plant species include wood spurge, foxglove and thimbleweed.