norway
Portugal and Andorra are the two countries on the Iberian Peninsula that share a border with Spain.
Norway share a long border with Sweden. And a short bit with Finland. Closest across water is Denmark.
Spain and Austria do not share a border
Norway and Finland share border up north!
Portugal, France, and Andorra all share a border with Spain.
No, the UK does not share a border with Spain. However Gibraltar does share a border with Spain, Gibraltar is under the sovereignty and jurisdiction of the UK but not part of the UK, it is a British Overseas Territory.
Spain shares a border with Portugal.
Norway and Sweden.
The only country sharing a border with Portugal, that is, Spain
Spain
They share a common border.