Scandinavia was a region in Northern Europe in which several Earth countrys were located, including such countries as Sweden, Norway, and Denmark. Individuals native to this region were known as Scandinavians.
One of the 37's, a fisherman, came from Scandinavia. (VOY: "The 37's")
Tom Paris thought that the fin was an old Scandinavian currency. (VOY: "The Cloud")
When the Leonardo da Vinci hologram was stolen from the USS Voyager in 2374, Tuvok claimed to be from Scandinavia in order to remain within the program's 16th century knowledge. (VOY: "Concerning Flight")