Both nations are members of the European Union and NATO.

Both countries form together with the Czech Republic and Hungary the Visegrád Group, which is an important regional group in Central Europe.

The countries share a 539 km long common border.

[1] The bulk of modern Slovakia was part of Poland from 1003 to c. 1031.

The northern outskirts of modern Slovakia remained part of Poland before gradually passing to Hungary in the following centuries, however, in 1412 Poland regained portions of the region of Spisz with 16 towns by the Treaty of Lubowla, and retained the territory until Austrian occupation in 1769, and the First Partition of Poland in 1772.