Knowledge Economy Indicators and Their Impact on the Sustainable Competitiveness of the EU Countries

In today’s turbulent world influenced by globalization, knowledge is becoming a key factor in the market. Every economy, if it wants to be successful and competitive, must pay more attention to knowledge and its creation, transfer, and preservation. In this respect, it is a key element in ensuring a country’s sustainable position in a competitive environment. Based on this, we set out the main idea of the article as follows: increased emphasis on the factors of a knowledge-based economy affects the growth of the country’s competitiveness, which contributes to its better sustainability. To verify the idea, we used a multi-criteria evaluation of countries by the TOPSIS method and a subsequent regression model. We examined developments in the EU countries over a period of 11 years in selected indicators typical for the knowledge economies, in the area of competitiveness. Finally, we examined the sustainability of EU countries. Based on the findings of these methods, we identified the leading country—Sweden—in the field of knowledge economy, competitiveness, and sustainability.