Expressway S52 is a Polish highway under construction, in the Silesian and Lesser Poland voivodeships. Upon completion it will connect the border of the Czech Republic in Cieszyn with Kraków. The road is planned to get completed by 2031.

Controlled-access highways in Poland are part of the national roads network and they are divided into motorways and expressways. Both types of highways feature grade-separated interchanges with all other roads, emergency lanes, feeder lanes, wildlife crossings and dedicated roadside rest areas. Motorways differ from expressways in their technical parameters like designated speed, permitted road curvature, lane widths or minimal distances between interchanges. Moreover, expressways might have single-carriageway sections in case of low traffic densities.