A lot of people confuse 'Scandinavian' with 'Nordic'. Scandinavia is a geographical description, Nordic is more cultural, which includes Scandinavia, Finland and Iceland.
‣ https://satwcomic.com/new-nordic
‣ https://satwcomic.com/greatest-authority
https://en.wikipedia.org/wiki/File:Estonian_alternative_flag... https://en.wikipedia.org/wiki/Flag_of_Estonia#Nordic_flag_pr...
Furthermore, in an article about military history, Scandinavia is understood - in a military geopolitical context - to only include Denmark, Norway and Sweden.
Of course, I enjoy being contrarian more than I probably should.
I'm Swedish, if that matters.
Not sure if any Scots agree, but it seems right to me at least.