Abstract: Many companies with different economic strength are integrated in the area of international entrepreneurship. International entrepreneurship activities are significant and necessary factors of economic growth and development of world economy. Internationalization of company activities is the necessity of the development for majority of entrepreneurial subjects in the Czech Republic. The Czech Republic is a country with a high share of exported and imported goods in its GDP which is typical of small countries of which researchersare one. The decision on internationalization of company activities counts among key long-term strategic decision these decisions bring significant changes in running a company and are conditioned by them as well. The entrance and activities of entrepreneurial subjects on the markets can be complicated owing to a number of factors that are given by the environment on one hand and the position and situation of the entrepreneurial subject itself on the other hand. Internationalization of entrepreneurial activities becomes a tool of business competitiveness.