The textbook is devoted to the problem of nationalism as one of the most important phenomena in the political and socio-economic life of modern society, its political history, theoretical justification and real implementation in modern society. The authors examine nationalism in retrospect of its evolution over the last two centuries. The first chapters outline the history of nationalism and discuss its conceptual transformations. A special chapter is devoted to a comparison of theories of nationalism, the main points of view and positions of famous researchers. Nationalism is considered in the context of the main ideological paradigms of our time: liberalism and conservatism. The interested reader will also be interested in learning how nationalism changes in the context of globalization, how it is connected with socio-economic processes, institutional, cultural transformations taking place in modern society. For university students, graduate students, teachers of political, legal, socio-economic, and humanitarian disciplines , as well as for everyone interested in the political problems of our time.