The aim of the study is to define the phenomenon of empireness and to define its role in the era of postcolonialism. We consider the forms of empireness in the form of media imperialism in relation to the policies and development trends of the United States, Japan and Russia. As a result of the research based on the works of M. Beissinger, E. M. Wood, G. Munkler and R. Rilling, we offer a definition of the concept of empireness as a variable quality, a property of a state that claims to dominate in a globalized world, manifested in the form of imperial ambitions in the politics of cultural imperialism. Further it is shown that currently the leading form of cultural imperialism is media imperialism (G. Munkler, G. Schiller and O. Boyd-Barrett). In this regard, the manifestations of imperialism via the examples of the USA, Japan and Russia were examined from the position of media imperialism. Everything allowed us, on the one hand, to outline a general theoretical methodology for working with empireness, and on the other hand, to show the possibilities of its application with specific examples, having determined that modern media in the form of mass media and mass culture can be successfully used as tools for realizing imperial ambitions.