Bearing in mind the fact that through the process of European integration the Member States have gained access to a single European market, which is one of the basic economic ideas of the creation of the European Union, this paper, whose tittle is „Marketing on the Free Market of the European Union", discusses aspects of marketing communication in conditions of freedom, whereby particular emphasis is put on possible restrictions and conditions under which these restrictions are imposed. Furthermore, by defining and interpreting the European Union's single market, which is also known as the free market or the internal market of the European Union, each of its four components are individually clarified: freedom of movement of goods, freedom of provision of services, freedom of movement of persons and freedom of movement of capital, as well as certain advertising standards and standards of placement of goods, services and workforce within such a concept. Hence, it is being examined how much marketing communication is truly free, is it susceptible to limitations, when and to what extent. In addition, the basis of the restrictions and the purpose of consumer protection are clarified in accordance with the European legislation. Lastly, all of the above is supported by statistical indicators, which enable a better understanding not only of the state, but also of trends and perspectives of marketing development on the single European market.