Arcadia (Greek: Ἀρκαδία) is a region in the central Peloponnese. It takes its name from the mythological character Arcas, and in Greek mythology it was the home of the god Pan. In European Renaissance arts, Arcadia was celebrated as an unspoiled, harmonious wilderness; as such, it was referenced in popular culture.

The modern regional unit of the same name more or less overlaps with the historical region, but is slightly larger.