To improve the understanding of territorial competitiveness at the region al level, the European Commission has developed the Regional Competitiveness Index. RCI shows the strengths and weaknesses of each of the EU NUTS 2 regions. The definition of regional competitiveness underpinning the RCI may therefore be summarized as “the ability to offer an attractive and sustainable environment for firms and residents to live and work”. The most competitive regions in Poland, as measured by the RCI, are Mazowieckie province and Śląskie province. The same result was observed in infrastructure pillar.