The Nicaraguan spider monkey (Ateles geoffroyi geoffroyi), is a subspecies of Geoffroy's spider monkey, a type of New World monkey, from Central America. It is native to Nicaragua and parts of Costa Rica closest to Nicaragua plus the Guanacaste peninsula. The population in Guanacaste and much of Nicaragua is sometimes considered to be a separate subspecies, A. g. frontatus. But other authorities consider A. g. frontatus to be a synonym of A. g.