Koleje Śląskie Sp. z o.o. is one of the largest regional railway carriers in Poland.

The beginning of the transport activity of Koleje Śląskie took place on October 1, 2011, and on December 9, 2012, the company took over from Przewozy Regionalne the service of almost all regional rail connections in the Śląskie Voivodeship.

The carrier serves 15 lines in the Śląskie Voivodeship, including two lines ending in the Małopolskie Voivodeship, one line ending in the Opolskie Voivodeship and one connection ending in the Moravian-Silesian region.

The company, through its activities, as part of the mission of "Customer Satisfaction", strives to significantly improve services - so that the satisfaction of travelers continues to increase.