There isn't one, they are neighbouring countries.
Sweden lies between Norway and Finland.
Finland is located between Sweden and Russia.
Sweden
All the countries in the world, except Sweden. If you meant what country is between Norway and Finland, it's Sweden.
Russia and Sweden Actually only Sweden shares a common border with Finland and Norway.
Sweden.
Finland is in northern Europe. It is between Russia and Sweden.
The Gulf of Bothnia lies between Sweden and Finland.
Sweden.
Sweden.
Sweden
Sweden