Scandinavia is a historical and cultural region in Northern Europe characterized by a common ethnocultural North Germanic heritage and mutually intelligible North Germanic languages.In English usage, Scandinavia sometimes refers to the area known as the Scandinavian Peninsula.

The term Scandinavia always includes the three kingdoms of Denmark, Norway, and Sweden. The remote Norwegian islands of Svalbard and Jan Mayen are usually not seen as a part of Scandinavia, nor is Greenland, an overseas territory of Denmark. However, the Faroe Islands, also a Danish overseas territory, are sometimes included, as sometimes are Iceland, Finland, and the Finnish autonomous region of the Åland Islands, because of their historical association with the Scandinavian countries and the Scandinavian peoples and languages.This looser definition almost equates to that of the Nordic countries. In the local languages, Skandinavia/Skandinavien often means the European parts of Denmark, Norway and Sweden, whereas the name Norden is more commonly used for the extended region that includes Finland, Iceland, and overseas parts of Denmark and Norway.

The name Scandinavia originally referred vaguely to the formerly Danish, now Swedish, region Scania. The terms Scandinavia and Scandinavian entered usage in the late 18th century as terms for Denmark, Norway and Sweden, their Germanic majority peoples and associated language and culture, the term being introduced by the early linguistic and cultural Scandinavist movement.

The majority of the population of Scandinavia are descended from several (North) Germanic tribes who originally inhabited the southern part of Scandinavia and spoke a Germanic language that evolved into Old Norse. Icelanders and the Faroese are to a significant extent descended from the Norse, and are therefore often seen as Scandinavian. Finland is mainly populated by Finns, with a minority of approximately 5% of Swedish speakers. A small minority of Sami people live in the extreme north of Scandinavia.