* The Scandinavian Mountains: This mountain range forms the backbone of Norway and Sweden, running from the north of Norway down to the south of Sweden.
* The Ural Mountains: These mountains run north-south along the eastern edge of Russia, forming a natural boundary between Europe and Asia.
* The Carpathian Mountains: This range runs through eastern Europe, encompassing parts of Poland, Slovakia, Ukraine, Romania, Serbia, and Hungary.
* The Balkan Mountains: This range runs through Bulgaria and Serbia, contributing to the eastern boundary of the lowland.
* The Caucasus Mountains: While these mountains are technically located in Eurasia, their western extent reaches into Georgia and Azerbaijan, adding to the southeastern boundary of the North European Lowland.
These mountain ranges create a distinct physical boundary, separating the flat, low-lying North European Lowland from the higher, more rugged terrain to the east.